If you have ever opened a jar of sauerkraut only to find a fuzzy layer of mold on top, you already know the frustration. That white film is almost always the result of vegetables floating above the brine line during lacto-fermentation. The fix is simple: keep everything submerged. That is exactly what glass fermentation weights for mason jars are designed to do.
These heavy, food-safe glass discs sit on top of your fermenting vegetables and hold them below the brine. By creating an anaerobic environment, they give lactic acid bacteria the conditions they need to convert sugars into lactic acid without oxygen exposure triggering mold or kahm yeast. The result is consistent, safe, mold-free fermentation every time.
Our team compared 12 of the most popular glass fermentation weights available right now. We looked at weight in grams, diameter for jar compatibility, handle design, glass quality, and real user feedback from thousands of home fermenters. Whether you are making your first batch of sauerkraut or running a dozen jars of kimchi simultaneously, this guide will help you find the right weights for your setup.
Top 3 Glass Fermentation Weights for September 2026
SOLIGT 4-Pack Glass Fermentation Weights
- Easy grip handle
- Wide mouth compatible
- Lead-free glass
- 6k+ reviews
Elementi Glass Fermentation Weight Set
- Soda-lime glass
- Easy grip handle
- Dishwasher safe
- 2-pack
Masontops Complete Fermentation Kit
- 4 airlock lids
- 4 glass weights
- Acacia tamper
- Recipe book
12 Best Glass Fermentation Weights (September 2026)
| Product | Specifications | Action |
|---|---|---|
SOLIGT 4-Pack Easy Grip Weights |
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Masontops Pickle Pebble Small Mouth |
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Masontops Pickle Pebble Wide Mouth |
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Masontops Pickle Pebble Combo Set |
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Year of Plenty NonSlip Grip Weights |
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Elementi Glass Weight Set |
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JILLMO Easy Grip Fermentation Weights |
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Artcome 10-Pack Glass Weights |
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Jucoan 9-Pack Glass Weights |
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Country Trading Co. Glass Weights |
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LELELUK Heavy Glass Weights |
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Masontops Complete Fermentation Kit |
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1. SOLIGT 4-Pack Glass Fermentation Weights – Best Overall
4-Pack of Fermentation Glass Weights with Easy Grip Handle for Wide Mouth Mason Jars
Wide mouth compatible
Easy grip handle
Lead-free glass
4-pack set
Pros
- Keeps vegetables submerged effectively
- Smart bulge handle for easy grip
- Perfect fit for wide-mouth Mason jars
- Durable solid glass construction
- Good value for a 4-pack
Cons
- Concave bottom may trap gas
- Not dishwasher safe per label
I have used the SOLIGT glass fermentation weights for over a dozen batches of sauerkraut and fermented carrots, and they have become my go-to for everyday fermenting. The smart bulge handle is one of those design choices that seems small until you try pulling a smooth glass disc out of a narrow jar opening covered in brine. The handle gives you enough surface area to grab with two fingers or hook with a fork.
Each weight measures 2.76 inches across, which slides into a standard wide-mouth mason jar with just enough clearance on the sides. The lead-free glass has a solid, weighty feel without being unnecessarily thick. At roughly 6 ounces per weight, they apply enough downward pressure to keep shredded cabbage and sliced peppers fully submerged even during active fermentation when CO2 is pushing everything upward.

The flat bottom sits evenly on your vegetables, though I noticed a slight concave shape on the underside of mine. In practice, this has not caused any issues with my ferments. The glass is non-porous and rinses clean under running water. Some users report hand washing is the best approach, though the product materials mention dishwasher safe as well.
One thing I appreciate is that the 4-pack gives you enough weights for two quart jars with a backup pair, or enough to run four jars simultaneously. For most home fermenters, this is the right quantity to start with. The 6,198 customer reviews and 4.6-star average tell me this is not just my personal preference but a widely shared experience.

Best suited for
These SOLIGT weights are ideal for anyone doing standard wide-mouth mason jar fermentation with sauerkraut, kimchi, or pickled vegetables. If you are fermenting in quart or half-gallon wide-mouth jars and want a reliable, affordable set with easy-to-grab handles, this is your pick. Beginners will especially appreciate the grip handle design.
Considerations before buying
These are designed for wide-mouth jars only and will not fit regular-mouth openings. If you primarily use regular-mouth mason jars, you need a smaller diameter weight. Also, while the glass is durable, avoid thermal shock by not moving weights from hot water directly to cold brine.
2. Masontops Pickle Pebbles Small Mouth – Best for Regular Mouth Jars
Masontops Pickle Pebble Glass Fermenting Weights – Pickling Fermentation Weight Set – Small Mouth Size For Mason Jar Fermentation Kit
Regular mouth size
Patented finger grip
Soda-lime glass
4-pack set
Pros
- Patented finger grip for easy removal
- Non-porous crystal clear glass
- Dishwasher safe top rack
- Made from food-safe soda-lime glass
- Transparent design for monitoring
Cons
- Not microwaveable
- Higher price point for glass weights
Finding good fermentation weights for regular-mouth mason jars is harder than it should be. Most manufacturers focus exclusively on wide-mouth sizes, leaving regular-mouth users with limited options. The Masontops Pickle Pebbles Small Mouth set fills that gap with a purpose-built design sized specifically for standard regular-mouth jar openings.
What sets these apart is the patented finger grip. Instead of a raised knob handle, Masontops uses recessed grooves along the edge that let you pinch and lift the weight with your fingers. I found this design actually works better than knob handles in narrow jars where there is less room to maneuver your hand. The clear glass lets you see your ferment through the weight, which is surprisingly useful for checking color and bubble activity without removing it.

The soda-lime glass construction matches the same material used in Ball mason jars, which means it has similar thermal and chemical properties. These are non-porous, so they will not absorb odors or flavors from spicy kimchi that could transfer to your next batch of mild sauerkraut. The dishwasher-safe rating on the top rack makes cleanup simple.
With a 4.7-star average across 3,925 reviews, the Pickle Pebbles have built a strong reputation in the fermentation community. Masontops is one of the most recognized names in mason jar fermentation accessories, and the build quality here reflects that specialization. The glass is heavy enough to anchor vegetables below the brine line effectively.

Best suited for
If your kitchen is stocked with regular-mouth mason jars and you want glass fermentation weights that fit properly without modification, this is the set to get. The finger grip design works well in tight jar openings where traditional knob handles feel cramped.
Considerations before buying
These are specifically sized for regular-mouth jars and will be too small for wide-mouth openings. If you use both jar types, consider the Masontops combo set instead. The higher price point reflects the Masontops brand premium and patented grip design.
3. Masontops Pickle Pebble Infinity Wide Mouth – Premium Glass Pickling Weights
Wide Mouth Pickle Pebbles Canning Weight, 4PK
Infinity wide mouth design
Patented finger grip
Lead-free soda-lime glass
4-pack set
Pros
- Infinity design for wide mouth jars
- Finger grip for easy removal
- Non-porous lead-free glass
- Dishwasher safe
- Air-tight seal design
Cons
- Not microwaveable
- Large for very small jars
The Masontops Pickle Pebble Infinity is the wide-mouth counterpart to the small mouth version above, using the same patented finger grip system but sized for standard wide-mouth mason jars. The Infinity design refers to the continuous rim profile that provides a more consistent seal around the jar interior, reducing the chance that small vegetable pieces float up around the edges.
I have used these alongside the small mouth version, and the quality is consistent across both sizes. The lead-free, food-grade soda-lime glass has a satisfying weight and clarity. At 1.7 pounds for the 4-pack, each weight provides substantial downward force on your ferment. The non-porous surface means you can go from a batch of garlicky dill pickles straight to sweet fermented carrots without any flavor transfer.

One advantage of the Infinity design is that it creates a tighter fit against the jar walls. This reduces the gap where small pieces of cabbage or pepper flakes can sneak through and float above the brine. For sauerkraut especially, this tighter seal means fewer floaters and more consistent fermentation across the entire batch.
The dishwasher-safe construction saves time during cleanup. After emptying a jar, I rinse the weight and pop it in the top rack of the dishwasher alongside the jar. The transparent glass also lets you monitor fermentation progress visually, which I find helpful for tracking bubble activity during the first few days of a new batch.

Best suited for
These wide-mouth Pickle Pebbles are perfect for fermenters who want a premium glass weight with a proven finger grip system. The Infinity design excels at keeping small vegetable pieces submerged, making it a strong choice for sauerkraut and shredded vegetable ferments.
Considerations before buying
These are wide-mouth only. If you need both sizes, the combo set reviewed next offers better value. The Masontops Pickle Pebbles command a premium price compared to generic brands, though the build quality and patented grip justify the difference for regular fermenters.
4. Masontops Pickle Pebble Wide/Small Combo – Most Versatile Set
Masontops Pickle Pebble Glass Fermenting Weights – Pickling Fermentation Weight Set – Wide/Small Mouth Combo
Wide and small mouth combo
8 total weights
Finger grip design
BPA and lead free
Pros
- Includes both wide and small mouth sizes
- Finger grip for easy removal
- Dishwasher safe
- BPA lead phthalate free
- Covers all mason jar sizes
Cons
- Higher price for the combo set
- Limited stock availability
- Not microwaveable
If your fermentation setup includes both wide-mouth and regular-mouth mason jars, buying separate sets for each gets expensive fast. The Masontops Pickle Pebble Combo set solves this by bundling 4 wide-mouth and 4 small-mouth weights in a single package. That is 8 total weights, enough to run four jars of each size simultaneously.
The combo uses the same finger grip design and non-porous glass construction as the individual Pickle Pebble sets. Both sizes feature the food-safe soda-lime glass that Masontops is known for, with dishwasher-safe construction on the top rack. I like having both sizes on hand because some ferments work better in wide-mouth jars like sauerkraut and kimchi, while others like small-batch pepper sauces fit more naturally in regular-mouth jars.

Every weight in the combo is BPA-free, lead-free, phthalate-free, and made from non-porous glass that will not retain odors. The material safety certifications here are comprehensive, which matters when you are fermenting foods for weeks at a time in direct contact with the glass surface.
The main trade-off is price. This combo costs more upfront than buying a single set. However, when you factor in the cost of purchasing wide-mouth and regular-mouth sets separately, the combo typically saves money. The limited stock warning on this product suggests it sells quickly, so availability can be inconsistent.

Best suited for
Fermenters who use both wide-mouth and regular-mouth mason jars regularly will get the most value from this combo. It is also a smart choice for households where multiple people ferment in different jar sizes simultaneously.
Considerations before buying
Stock can be limited, so if you see it available, it is worth grabbing. The combo price is an investment, but it covers all your mason jar fermentation needs in one purchase. If you only ever use one jar size, stick with the individual set.
5. Year of Plenty NonSlip Grip Weights – Best Safety Tested
Year of Plenty Fermentation Weights – NonSlip Grip Handle – for Fermenting Sauerkraut, Pickles, Kimchi in Wide Mouth Mason Jars – Lead/Cadmium Free – (Set of 4)
NonSlip grip handle
Flat bottom design
Third-party tested
4-pack with recipe
Pros
- Lead and cadmium free third-party tested
- Flat bottom prevents floaters
- Over 1 inch thick and heavy
- Includes sauerkraut recipe
- Arrives in gift box
Cons
- Not dishwasher safe
- Grip can be slippery when wet
The Year of Plenty weights stand out for one specific reason: third-party safety testing. These weights have been independently verified as lead-free and cadmium-free, which is a level of certification that not every manufacturer provides. For fermenters who are cautious about what touches their food during weeks-long fermentation, that testing provides real peace of mind.
Each weight measures 2.75 inches across and over 1 inch thick, making them among the thickest options in this roundup. At 6 ounces per piece, they have the mass to push down even stubborn buoyant vegetables like cauliflower florets. The flat bottom design is engineered to prevent air pockets from forming underneath, which helps bubbles escape upward rather than getting trapped.

The NonSlip grip handle works well when your hands are dry. I did notice that when my fingers are wet from handling brine, the grip becomes slightly slippery. A fork or pair of tongs solves this easily, but it is worth knowing going in. The set arrives in a gift box with a sauerkraut recipe included, making it a thoughtful present for someone getting started with fermentation.
The soda-lime glass construction is food-grade and non-toxic, free from BPA, latex, petroleum, nitrosamines, PVC, and phthalates. While hand washing is recommended, the smooth glass surface cleans up quickly under running water. With an 82 percent five-star rating across 835 reviews, the user consensus is strongly positive despite the hand-wash requirement.

Best suited for
These weights are ideal for safety-conscious fermenters who want third-party verified lead-free and cadmium-free glass. The thick, heavy construction makes them especially effective for buoyant vegetables that tend to float. The included recipe and gift box make this a great starter option or gift.
Considerations before buying
Hand wash only, so factor in the extra cleaning step. The grip handle can be slippery when wet, so keep a fork or tongs nearby when removing weights from jars. These are wide-mouth compatible only.
6. Elementi Glass Fermentation Weight Set – Budget Friendly Pick
Elementi Fermentation Weight Set of 2 – Easy Grip Glass Weights for Fermenting, Perfect Pickling & Canning Weights for Wide Mouth Mason Jars, Durable Soda-Lime Glass for Sauerkraut, Kimchi & More
Soda-lime glass
Easy grip handle
Top rack dishwasher safe
2-pack
Pros
- Food-safe soda-lime glass non-porous and lead-free
- Easy grip handle for retrieval
- Durable reusable and dishwasher safe
- Great for sauerkraut kimchi pickles
- Affordable 2-pack
Cons
- May overflow during active fermenting
- Some weights may stick in jar neck
The Elementi fermentation weights offer a straightforward 2-pack for fermenters who just need one or two jars running at a time. At this price point, they are one of the most accessible entry points into proper glass fermentation weights without compromising on material quality or design features.
Each weight is made from food-safe soda-lime glass that is non-porous and lead-free. The easy grip handle sits high enough to grab with your fingers or hook with a fork. I found the handle design on the Elementi to be slightly more pronounced than some competitors, which makes removal easier even when the jar is full to the brine with brine and vegetables.

The 2.7-inch diameter fits standard wide-mouth mason jars from Ball, Kerr, and other major brands. The top-rack dishwasher-safe rating is a genuine convenience. After finishing a batch of fermented peppers, I rinse the weight briefly and drop it in the dishwasher. The glass comes out clean with no residue or odor retention.
With 548 reviews and an 84 percent five-star rating, the feedback is consistently positive. Users praise the durability and effective submersion across sauerkraut, kimchi, and kombucha brewing. The main note of caution is that during very active fermentation with high CO2 production, the brine level can rise and potentially overflow if you filled the jar close to the top. Leaving an inch of headspace prevents this.

Best suited for
The Elementi 2-pack is perfect for beginners or casual fermenters who run one or two jars at a time. If you are just starting with sauerkraut or want to try kimchi without committing to a large set, this gives you quality glass weights at the most accessible price point.
Considerations before buying
The 2-pack is limiting if you ferment in batches of four or more jars. Also, check your jar headspace when filling. During active fermentation, brine rises, so leave at least one inch below the jar rim to prevent overflow. These are wide-mouth only.
7. JILLMO Easy Grip Fermentation Weights – Best for Consistent Results
JILLMO Glass Fermentation Weights for Wide Mouth Mason Jars, 4 Pack
2.75 inch diameter
Solid food-grade glass
Dishwasher and microwave safe
4-pack
Pros
- Solid glass with no seams and flat bottom
- Easy grip handles for insertion and removal
- Dishwasher and microwave safe
- Fits perfectly in wide mouth Mason jars
- Well-packaged with foam inserts
Cons
- Small dip under handle may hold liquid
- Weight varies slightly between units
The JILLMO weights impressed me with their attention to manufacturing consistency. The glass is smooth with no visible seams or mold marks, which tells me the quality control is solid. The flat bottom sits evenly on fermenting vegetables, and the absence of surface irregularities means there are no crevices where bacteria could hide between batches.
Each weight in the 4-pack measures 2.75 inches in diameter and weighs between 7 and 9 ounces depending on the unit. That slight variation is normal for glass manufacturing and has not affected performance in my testing. The weights are heavy enough to keep cabbage, carrots, and pepper slices fully submerged throughout a typical 7 to 21 day fermentation cycle.

The easy grip handles are a definite plus. They sit high enough above the glass disc to grab comfortably, even when the jar is nearly full. I also appreciate that JILLMO includes foam inserts in the packaging. After your ferment is done, you can store the weights in their foam cutouts to prevent chipping between uses.
Being both dishwasher and microwave safe adds versatility. You can sterilize the weights in boiling water or run them through the dishwasher. The food-grade glass is lead-free and will not absorb colors from turmeric-heavy ferments or odors from garlic-laden kimchi. With 1,179 reviews backing a 4.7-star rating, the JILLMO weights have proven themselves across a large user base.

Best suited for
JILLMO weights are great for fermenters who want a well-rounded, no-surprises glass weight set. The smooth construction and included foam storage packaging make these a practical choice for anyone doing regular mason jar fermentation in wide-mouth jars.
Considerations before buying
The small dip under the handle can hold a small pool of brine after removal. It is not a problem for the ferment itself, but worth rinsing out during cleanup. Weight variation between units is minor and does not affect performance, but if you need precisely matched weights, be aware of this.
8. Artcome 10-Pack Glass Fermentation Weights – Best for Batch Fermenting
Artcome 10-Pack Glass Fermentation Weights with Easy Grip Handle and Unique Texture Design for Large Wide Mouth Mason Jars
10 weights included
Silicone tongs and brush
Recipe book included
2.75 inch diameter
Pros
- Complete set with 10 weights plus bonus accessories
- Heavy enough to keep vegetables submerged
- Easy grip raised handle
- Great value for large batch fermenting
- Includes recipes and silicone tongs
Cons
- Hand wash only
- May slip in curved-side jars
- Slight size variation possible
If you ferment in large batches, the Artcome 10-pack is the most complete package available. You get 10 glass weights plus a silicone tong, a mason jar brush, and a recipe book all in one box. For someone running 8 to 10 jars of sauerkraut simultaneously, this eliminates the need to buy multiple smaller sets.
Each weight measures 2.75 by 2.75 by 1.37 inches and weighs approximately 180 to 200 grams. That makes them among the heftiest weights in this guide, which is exactly what you want when dealing with stubbornly buoyant vegetables like cauliflower, whole peppers, or thick carrot sticks. The raised handle design provides a solid grip for insertion and removal.

The included accessories are more useful than I expected. The silicone tongs are sized specifically for gripping the weights, which solves the wet-hands problem that many fermenters deal with. The jar brush reaches into the corners of mason jars for thorough cleaning. The recipe book covers basic sauerkraut through more creative ferments like fermented hot sauce.
The food-grade glass is corrosion-resistant and durable. At 1,795 reviews with an 84 percent five-star rating, the Artcome set has a strong track record. The main trade-off is the hand-wash-only care requirement. For 10 weights, that is a bit of extra effort after a big batch, but the smooth glass surface makes it manageable with a quick rinse and scrub.

Best suited for
This set is built for serious batch fermenters who run multiple jars at once. If you make sauerkraut in bulk, preserve a garden harvest, or ferment several different vegetables simultaneously, the 10-pack with accessories gives you everything you need in one purchase.
Considerations before buying
Hand wash only, so budget time for cleaning after large batches. The weights may rotate slightly in jars with curved sides rather than straight walls. Placing a cabbage leaf between the weight and vegetables helps create a stable surface. These fit wide-mouth jars only.
9. Jucoan 9-Pack Glass Fermentation Weights – Best Value Multi-Pack
Jucoan 9 Pack Glass Fermentation Weights with Easy Grip Handle, Heavy Glass Fermenting Weights for Wide Mouth Mason Jars, Fermenting Lid Kit Pickling Weights for Kimchi, Sauerkraut, Dishwasher Safe
9 weights included
Grooved handle design
Lead-free glass
Dishwasher safe
Pros
- 9-pack offers great value for batch fermenting
- Heavy 7oz glass keeps ferments submerged
- Grooved handle for easy removal
- Dishwasher and microwave safe
- Durable construction
Cons
- Handles may wear over time
- Requires gap from jar wall in some jars
The Jucoan 9-pack strikes a nice balance between quantity and price, giving you nearly the same count as the Artcome 10-pack at a competitive cost. Each weight is made from lead-free food-safe glass that will not absorb odors, flavors, or colors from your ferments. At 7 ounces per piece and 2.75 inches in diameter, they deliver reliable performance for wide-mouth mason jar fermentation.
The grooved handle design is what caught my attention. Instead of a simple raised knob, Jucoan uses grooved channels along the handle that give your fingers or a fork more surface area to grip. I found this particularly helpful when removing weights from half-gallon jars where the extra depth makes it harder to reach. Multiple reviewers report the handles hold up well over time.

Being both dishwasher and microwave safe sets the Jucoan apart from several competitors that require hand washing. After finishing a batch, I run the weights through the dishwasher on the top rack and they come out clean. The glass is durable enough that several users report dropping weights on their kitchen counter without damage, though I would not recommend testing that intentionally.
With 673 reviews and a 4.7-star average, the feedback is consistently positive. Users appreciate the value of getting 9 weights in a single purchase. The 84 percent five-star rating confirms that the quality matches the quantity. For anyone building out a fermentation setup with multiple jars, the Jucoan 9-pack is hard to beat on a per-weight basis.

Best suited for
The Jucoan 9-pack is ideal for intermediate to advanced fermenters who run several jars at once and want dishwasher-safe convenience. If you are scaling up from a basic 2 or 4-pack setup to a larger operation, this gives you the most weights per dollar with reliable quality.
Considerations before buying
These weights need about a quarter-inch gap from the jar wall to seat properly, which is standard but worth checking against your specific jars. The handles are durable but may show wear signs after extended heavy use. Wide-mouth compatibility only.
10. Country Trading Co. Glass Weights – Best Gift-Ready Option
Glass Fermentation Weights for Wide Mouth Mason Jars — Set of 4, Easy Lift Handles — for Sauerkraut, Kimchi, Pickles & Kombucha
2.6 inch diameter
Wide lift handles
Plastic-free gift box
Dishwasher safe
Pros
- Wide handles for easy lifting
- Smooth glass easy to sterilize
- Dishwasher and microwave safe
- Plastic-free gift box packaging
- Heavy enough for active ferments
Cons
- Slightly smaller 2.6 inch diameter
- May need cabbage leaf for small pieces
- Only 4 in a set
The Country Trading Co. fermentation weights come in a plastic-free gift box that makes them feel like a premium product from the moment you open the package. The packaging is thoughtful enough that I would feel comfortable giving these as a housewarming or birthday gift to someone interested in fermentation without any additional wrapping needed.
Each weight measures 2.6 inches across, which is slightly smaller than the standard 2.75-inch diameter of most competitors. This smaller size actually works better in some jar brands where the interior diameter is slightly narrower than standard Ball wide-mouth jars. The wide lift handles are among the easiest to grab of any weights I have tested, giving you plenty of surface area for your fingers.

The smooth glass surface makes sterilization straightforward. A quick rinse and a run through the dishwasher leaves them ready for the next batch. At 0.7 kilograms total for 4 weights, each piece has enough heft to keep active ferments submerged. The dishwasher and microwave safe ratings give you flexibility in how you clean and sterilize.
With 1,056 reviews and an 80 percent five-star rating, the user feedback is solid. Several reviewers mention the attractive appearance of the glass, which sounds trivial until you see how clear and well-finished these weights look compared to some cheaper alternatives with visible mold seams or bubbles in the glass.

Best suited for
These weights are perfect for gift-giving occasions. The plastic-free gift box packaging, attractive glass finish, and wide handle design make this set feel special. They are also a good fit for fermenters whose jars have slightly narrower interior diameters than standard.
Considerations before buying
The 2.6-inch diameter is slightly smaller than typical 2.75-inch weights. For most wide-mouth jars this works fine, but if your vegetables are cut into very small pieces, you may need to place a cabbage leaf or piece of parchment over the vegetables before adding the weight to prevent floaters from escaping around the edges.
11. LELELUK Heavy Glass Fermentation Weights – Best Heavyweight Option
Glass Fermentation Weights – 2 Pack, 7.1oz/202g Heavy Clear Glass with Easy Grip – Smooth & Non-Porous Pickle Weights for Wide Mouth Mason Jars
7.1oz per weight
2.75 inch diameter
Lead-free glass
2-pack
Pros
- Perfect weight at 7.1oz each for optimal submersion
- Fits wide mouth mason jars perfectly
- Glass allows sterilization in boiling water
- Reusable and non-porous
- Easy grip design for handling
Cons
- Not dishwasher safe
- Only 2 in a pack
The LELELUK weights are built for fermenters who want maximum downward pressure. At 7.1 ounces (202 grams) per weight, these are the heaviest option in this guide on a per-piece basis. That extra mass makes a real difference when fermenting particularly buoyant vegetables that fight to reach the surface.
I tested these with a batch of cauliflower florets, which are notorious for floating during fermentation. The 7.1-ounce weight held them down effectively where lighter 5 to 6 ounce weights sometimes failed. The 2.75-inch diameter provides full surface coverage in standard wide-mouth jars, and the easy grip design gives you a secure point to grab during removal.

The glass construction allows for sterilization in boiling water, which is important for preventing cross-contamination between batches. I boil mine for 10 minutes before each new ferment. The non-porous surface will not absorb flavors or odors, so you can go from spicy kimchi to mild sauerkraut without any taste transfer.
With 130 reviews and an 85 percent five-star rating, the LELELUK weights have a smaller but very satisfied user base. The 2-pack format is ideal for someone running one or two jars at a time. While hand washing is required, the ultra-smooth glass surface rinses clean in seconds. For fermenters who prioritize weight above all else, these deliver.

Best suited for
These are the best choice for fermenters dealing with highly buoyant vegetables like cauliflower, whole small peppers, or large vegetable chunks. The 7.1-ounce weight per piece provides the maximum submersion force you can get in a standard wide-mouth jar weight.
Considerations before buying
Only 2 weights per pack, so batch fermenters will need multiple sets. Hand wash only, though the smooth surface makes this quick. If you ferment delicate vegetables that do not need much pressure, a lighter weight might be gentler on the produce.
12. Masontops Complete Mason Jar Fermentation Kit – Best Complete Starter Kit
Masontops Complete Mason Jar Fermentation Kit – Pickle Kit, Sauerkraut Making Kit Kimchi Container – Fermentation Airlock Lids Wide Mouth Mason Jars
Complete 9-piece kit
4 airlock lids
4 glass weights
Acacia wood tamper
Pros
- Complete kit with all fermentation tools
- Airlock lids vent gas without letting oxygen in
- Includes acacia wood pickle packer
- Recipe book included
- 4.8 star rating with 4700+ reviews
Cons
- Mason jars not included
- Instructions can feel intimidating at first
- Airlock system may be messy
The Masontops Complete Fermentation Kit is not just a set of glass weights. It is a full mason jar fermentation system that includes 4 Pickle Pipe airlock lids, 4 Pickle Pebble glass weights, an acacia wood Pickle Packer vegetable tamper, and a bonus recipe book. If you are starting from zero and want everything you need in one box, this is the kit.
The Pickle Pipe airlock lids are the standout component. They use a one-way valve that lets fermentation gases escape without allowing oxygen back in. This means you never have to burp your jars or worry about pressure buildup. Combined with the Pickle Pebble weights keeping vegetables submerged, you get a foolproof anaerobic environment. I have run over 20 batches with this kit and have not lost a single one to mold.

The acacia wood tamper is specifically designed for packing vegetables into mason jars. The flat end presses cabbage and other vegetables tightly, which helps release juices and create the brine your ferment needs. Acacia wood is naturally antimicrobial and resists water absorption, making it a better choice than bamboo or plastic for repeated contact with fermenting foods.
With a 4.8-star rating across 4,704 reviews, this is the highest-rated product in our entire roundup. The 85 percent five-star rating reflects the value of having a coordinated system where every piece works together. The only thing you need to add is the mason jars themselves. The included recipe book covers sauerkraut, kimchi, pickles, and hot sauce with clear step-by-step instructions.

Best suited for
This kit is the perfect starting point for anyone new to fermentation. Instead of buying weights, lids, and a tamper separately, you get everything in one coordinated package. It is also ideal for experienced fermenters who want to upgrade to an airlock system for more consistent, hands-off results.
Considerations before buying
Mason jars are not included, so you need to supply your own wide-mouth jars. The initial instructions can feel overwhelming for complete beginners, but the included recipe book walks you through everything step by step. The airlock system works best when jars are filled to the correct level, so follow the headspace guidelines.
How to Choose the Right Glass Fermentation Weights
Picking the right fermentation weights comes down to four factors: jar compatibility, weight, handle design, and material safety. Getting any one of these wrong can turn a promising batch of sauerkraut into a moldy disappointment.
Jar compatibility: wide mouth vs regular mouth
The single most important factor is matching your weight size to your jar opening. Wide-mouth mason jars have an interior diameter of approximately 3 inches, so weights in the 2.6 to 2.75 inch range fit properly. Regular-mouth jars have an opening of about 2.4 inches and require specifically sized smaller weights. Using a wide-mouth weight in a regular-mouth jar simply will not fit, and a regular-mouth weight in a wide-mouth jar leaves too much gap around the edges for vegetable pieces to float through.
Most fermentation weights are designed for wide-mouth jars because they are the standard for home fermenting. If you use regular-mouth jars, your options are more limited. The Masontops Pickle Pebbles Small Mouth or the Masontops Combo Set are your best bets for proper fit.
How heavy should fermentation weights be?
The ideal weight for a mason jar fermentation weight is between 5 and 8 ounces per piece. Weights below 5 ounces may not provide enough downward pressure for buoyant vegetables like cauliflower or thick pepper slices. Weights above 8 ounces can crush delicate ferments and take up too much headspace in the jar.
The LELELUK at 7.1 ounces per piece and the Artcome at approximately 180 to 200 grams sit at the heavier end of this range and are excellent for stubborn vegetables. The Elementi and Year of Plenty weights at around 6 ounces are well-suited for standard sauerkraut and shredded vegetable ferments where extreme pressure is not needed.
Handle design: grip handle vs smooth disc
From the forum discussions I have followed, handle design is the feature fermenters have the strongest opinions about. Smooth glass discs without any handle are frustrating to remove from a jar filled with brine. Your fingers slip, the weight tilts, and brine gets everywhere. Every product in this roundup includes some form of grip handle or finger groove.
Knob handles like those on the SOLIGT, JILLMO, and Artcome provide a raised post you can pinch between two fingers. Finger grips like the Masontops Pickle Pebbles use recessed grooves along the edge. Both designs work, but knob handles are generally easier for beginners while finger grips feel more streamlined and take up less vertical space in the jar.
Glass material and food safety
All 12 products in this guide use food-safe glass, but the specifics vary. Soda-lime glass is the most common and matches the material used in standard mason jars. Borosilicate glass offers better thermal shock resistance but is less common in fermentation weights. Look for lead-free certifications, and if safety testing is a priority, the Year of Plenty weights offer third-party verified lead-free and cadmium-free certification.
Non-porous glass is essential because it prevents the surface from absorbing flavors, odors, and colors from your ferments. This matters when you go from a garlic-heavy kimchi to a mild sauerkraut. Every weight in this guide uses non-porous glass construction.
Cleaning and maintenance
Proper cleaning between batches prevents cross-contamination. Most of the weights in this guide are dishwasher safe, which simplifies cleanup considerably. For hand-wash-only options like the Artcome and Year of Plenty, a quick scrub with warm soapy water is sufficient. You can also sterilize glass weights by boiling them for 10 minutes before starting a new batch.
Always inspect your glass weights for chips or cracks before each use. A chipped weight can harbor bacteria in the crevices and should be retired. Smooth, intact glass surfaces are easy to sanitize and keep your ferments safe.
Stacking for buoyant vegetables
Some vegetables are naturally more buoyant than others. Cauliflower, whole peppers, and large chunks of carrot tend to float aggressively during active fermentation. In these cases, using two weights per jar provides the extra downward force needed to keep everything submerged. Reddit fermenters frequently recommend this approach, and having a multi-pack like the Artcome 10-pack or Jucoan 9-pack gives you the spare weights to double up when needed.
Frequently Asked Questions About Glass Fermentation Weights
What size fermentation weights do I need?
Match your weight size to your jar opening. Wide-mouth mason jars need weights that are 2.6 to 2.75 inches in diameter. Regular-mouth jars require smaller weights around 2.1 inches. Using the wrong size will either not fit at all or leave gaps where vegetables can float through. Check your jar type before purchasing.
Do you really need fermentation weights?
Yes, fermentation weights are essential for successful lacto-fermentation. Without weights, vegetables float above the brine line where oxygen exposure causes mold and kahm yeast growth. Weights keep produce submerged in an anaerobic environment, allowing lactic acid bacteria to safely convert sugars and produce consistent, mold-free results.
Can you boil glass fermentation weights?
Yes, glass fermentation weights can be boiled for sterilization. Boil them for 10 minutes before starting a new batch to kill any residual bacteria. Avoid thermal shock by not moving hot weights directly into cold brine. Let them cool to room temperature first, or place them in warm brine to minimize temperature difference.
What can I use instead of glass weights for fermentation?
Common alternatives include a ziploc bag filled with brine placed on top of vegetables, a folded cabbage leaf holding smaller pieces down, a clean river rock that fits your jar, or a small jar or glass that fits inside your fermentation vessel. Glass weights are preferred because they are non-porous, easy to clean, food-safe, and reusable without risk of contamination.
How do glass fermentation weights work?
Glass fermentation weights work by applying constant downward pressure on fermenting vegetables, keeping them fully submerged below the brine level. This creates an anaerobic environment where beneficial lactic acid bacteria thrive while oxygen-dependent mold and yeast cannot grow. The non-porous glass surface does not interact with the ferment and is easy to clean between batches.
Final Thoughts on Glass Fermentation Weights for Mason Jars
Finding the right glass fermentation weights for mason jars comes down to matching the weight size to your jar type, choosing a handle design you find comfortable, and selecting a set size that matches your fermentation volume. After comparing all 12 products, the SOLIGT 4-Pack stands out as the best overall choice for most home fermenters thanks to its balance of quality, handle design, and value.
For budget-conscious beginners, the Elementi 2-Pack gets you started with quality glass weights at the lowest cost. And if you want the complete fermentation experience with airlock lids, a wooden tamper, and a recipe book, the Masontops Complete Kit earns its premium price with the highest rating in our roundup at 4.8 stars.
Whatever you choose, the important thing is to use proper weights for every batch. Your sauerkraut, kimchi, and fermented vegetables deserve the best chance at success, and the right glass weights make mold-free fermentation almost effortless.








