There is a groove running around the top inside that needs to "snap" over the raised glass ridge on the Mason jar (just under the threads).
These fit current production Ball and Kerr half pint jars and 8oz quilted jelly jars. They will also fit most other 8oz regular mouth Mason jars.
Our kids use most of the half pint jars that are always littering the kitchen, but I also use them to drink coffee and cocktails.
Microwave safe means you can heat up your beverage without removing the sleeve. Or take out a frozen jar of food, put a koozie on it, and heat it up.
Since they don't touch your beverage, I often just rinse them, but they are also dishwasher safe. You can leave them on the jar, but I find that water gets trapped so I prefer to separate them to clean the jar.
You could also use one to block sunlight or prying eyes from the contents of your jar.
Great for kids and adults!
- These silicone sleeves for regular mouth half pint and 8oz jelly jars (the little ones!) add grip and padding, and they also insulate. Bright blue have a hole in the bottom, which makes them easier to remove.
- We love to use glass jars instead of plastic cups for our kids' beverages, and the silicone helps prevent them from breaking when they inevitably hit the ground.
- Our insulating sleeve protects your glass jar from breakage and your hand from cold or heat. Perfect for heating up food or beverages in the microwave! Our sleeves are 50-100% thicker than other brands, and have no cut out areas that leave your fingers unprotected.
- Made of 100% silicone rubber, these sleeves are dishwasher, freezer, and microwave safe! Silicone is a safe, green, non-plastic (BPA free) material for food use that does not leach any chemicals.
- Your entire Mason Jar Lifestyle order ships for a flat $3, or free over $35. Check out our other products! Ships in 1 day via USPS First Class from Denver, CO.
- These silicone sleeves for regular mouth half pint and 8oz jelly jars (the little ones!) add grip and padding, and they also insulate. Bright blue have a hole in the bottom, which makes them easier to remove.
- We love to use glass jars instead of plastic cups for our kids' beverages, and the silicone helps prevent them from breaking when they inevitably hit the ground.
- Our insulating sleeve protects your glass jar from breakage and your hand from cold or heat. Perfect for heating up food or beverages in the microwave! Our sleeves are 50-100% thicker than other brands, and have no cut out areas that leave your fingers unprotected.
- Made of 100% silicone rubber, these sleeves are dishwasher, freezer, and microwave safe! Silicone is a safe, green, non-plastic (BPA free) material for food use that does not leach any chemicals.
- Your entire Mason Jar Lifestyle order ships for a flat $3, or free over $35. Check out our other products! Ships in 1 day via USPS First Class from Denver, CO.
