Dual use! These lids function as both a straw hole tumbler lid, and also as a fermentation lid. The 10.5mm hole will accept any straw up to 10mm, and is also the perfect size for plastic 3 piece fermentation airlocks.
Attach with the included stainless steel band. Unlike normal Mason jar rings, this one will not rust with normal use and is dishwasher safe.
- Includes 1 silicone Lid plus 1 stainless steel band
- Made of food grade silicone rubber
- Silicone is a safe, green, non-plastic (BPA free) material for food use that does not leach any chemicals
- Stainless steel band will not rust
- Dishwasher, freezer, and microwave safe
- Packaging is plastic-free and compostable
- Made in China
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