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Silicone Sleeve for Regular Mouth Half Pint 8oz Mason Jars


We love to use glass jars instead of plastic cups for our kids’ beverages, but there is always the worry that they will end up broken on the ground.

These silicone sleeves for Regular Mouth Half Pint (8oz) jars add grip and padding, and they also insulate.

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Mix and match colors!

Whether you call it a Koozie, a Kozie, a Coozy, a Cozy, or just an insulating sleeve, it’s perfect for protecting your glass jar from breakage and your hand from cold or heat.

Made of food grade 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.

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.

Use a different color for each family member, and stop wondering which beverage cup is yours!

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.

They have a hole in the bottom to make getting them off easier.

You could also use one to block sunlight or prying eyes from the contents of your jar.

Great for kids and adults!

Choose Color

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Mason Jar Lifestyle

Customer Reviews

Based on 27 reviews
Seleigh Norvell
Great product!

These sleeves make “jelly jars” (as I grew up calling them) the perfect glass for kids to drink from! They’re easy to put on and take off, but they don’t slip off or slide down on their own.

Jeff B (Yorktown, VA, US)
Perfectly met the need!

The 8 oz koozies are awesome! The jar slides right in but never feels loose.

craig johnson (New York, NY, US)

I think it's a great idea, unfortunately I ordered the wrong size.

Sarah W. (Indianapolis, IN, US)
As described. Work great!

My toddler has been using the 2 sleeves we got, as well as myself, at times. I love the happy colors, as well as the neutral options we can pair with his bright colored straws, or just a clear drinking top from this site. They are good quality, and are holding up well, so far. The silicone is thick enough that I feel like it will insulate well in the case of any drops, and I love having the option of non-toxic cups for him, without much risk of glass breaking. We had been (and still are) using sleeves from another company, which also worked well, but it is nice to have a slightly more reasonably priced option, with the convenience of ordering tops and sleeves from the same place!

Marilyn Westphal (Caledonia, MI, US)
Silicone jar sleeve

Good hand feel. Fits the jar I am using well. Thank you for another well put together and shipped order.

regular-mouth-half-pint-sleeve-new-style-5-colors-lids-strawsSilicone Sleeve for Regular Mouth Half Pint 8oz Mason Jars