5.0
Silicone Sleeves for 4oz Mason Jars in Frost Berry Pink Cherry Red Leaf Green Aquamarine Deep Blue Midnight Blue Ultra Violet and Charcoal Gray
Regular Mouth Silicone Sleeve for 4oz Mason Jars
Silicone Sleeves for 4oz Mason Jars in Frost Berry Pink Cherry Red Leaf Green Aquamarine Deep Blue Midnight Blue Ultra Violet and Charcoal Gray
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deep blue silicone sleeve koozie for 4oz regular mouth mason jars
midnight blue silicone sleeve for 4oz regular mouth mason jar
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Silicone Sleeve for 4oz Mason Jars
Silicone Sleeve for 4oz Mason Jars
Silicone Sleeve for 4oz Mason Jars
Silicone Sleeve for 4oz Mason Jars
Silicone Sleeve for 4oz Mason Jars
Silicone Sleeve for 4oz Mason Jars
Silicone Sleeve for 4oz Mason Jars
Silicone Sleeve for 4oz Mason Jars
Silicone Sleeves for 4oz Mason Jars in Frost Berry Pink Cherry Red Leaf Green Aquamarine Deep Blue Midnight Blue Ultra Violet and Charcoal Gray
Regular Mouth Silicone Sleeve for 4oz Mason Jars
Silicone Sleeves for 4oz Mason Jars in Frost Berry Pink Cherry Red Leaf Green Aquamarine Deep Blue Midnight Blue Ultra Violet and Charcoal Gray
cherry red silicone sleeve koozie for 4oz regular mouth mason jars
deep blue silicone sleeve koozie for 4oz regular mouth mason jars
midnight blue silicone sleeve for 4oz regular mouth mason jar
leaf green silicone sleeve for 4oz regular mouth mason jar
mason-jar-lifestyle-silicone-sleeve-jacket-7-sizes-5-colors-4oz-8oz-16oz-32oz-ball-kerr-what-size
mason-jar-lifestyle-silicone-sleeve-jacket-koozie-4oz-mason-jars-5-colors-lids-baby-bottle
Mason Jar Lifestyle Leak proof plastic storage lids and silicone koozies on regular mouth 4oz, 8oz, 16oz, 32oz half pint quart Mason jars 5 colors
mason-jar-lifestyle-charcoal-gray-silicone-sleeve-4oz-mason-jar-espresso-cup
mason-jar-lifestyle-frost-silicone-sleeve-jacket-koozie-4oz-mason-jar-stainless-steel-leak-proof-lid-teddy-grahams
charcoal-gray-silicone-sleeve-koozie-4oz-8oz-half-pint-regular-wide-mouth-mason-jars-white
Silicone Sleeve for 4oz Mason Jars
Silicone Sleeve for 4oz Mason Jars
Silicone Sleeve for 4oz Mason Jars
Silicone Sleeve for 4oz Mason Jars
Silicone Sleeve for 4oz Mason Jars
Silicone Sleeve for 4oz Mason Jars
Silicone Sleeve for 4oz Mason Jars
Silicone Sleeve for 4oz Mason Jars

Silicone Sleeve for 4oz Mason Jars

$3.29 $0.00 /
Subscription

These silicone sleeves for Regular Mouth 4oz jars (the tiny ones) add grip and padding, and they also insulate. Use them for baby food, shot or shooter glasses, espresso cups, condiment cups, snacks, or anything else.

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 safe silicone rubber, these sleeves are dishwasher, freezer, and microwave safe. Silicone is a safe, non-plastic, BPA free material for food use that does not leach any chemicals.

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Size Guide

Will this fit my jar?

Here's a printable size guide to help determine what size mason jar accessories you need:

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Shipping:

Enjoy free shipping on all orders over $49.

For all other orders:
Flat rate shipping: $3.99
Expedited shipping: $9.99

We try hard to ship every order that comes in before 1 pm MST on the same day, and all orders within 24 hours. All shipments come from our warehouse in beautiful Wheat Ridge, CO (USA).

Returns:

All orders can be returned for any reason within 6 months.

Click here to see our full shipping and returns policy.

Product Description

I use these as an adorable espresso cup. The silicone sleeve adds grip, looks great, and I love the feel of it in my hand.

We designed the sleeve to fit tight enough that it won't fall off, but loose enough that it is still easy to get on and off. Different brands of jars will vary a little in size, but it should stretch to fit almost any of them.

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

This size does not have a hole in the bottom, so you can also use it without a glass jar inside.

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 make great "pup cups" too!!!

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Customer Reviews

Based on 18 reviews
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L
Luke Palmer
Simple & Great

My wife and I are using these sleeves for baby bottles and toddler sippy cups. My main concern was how effectively they would hold up to our toddler’s testing gravity with a mason jar cup. It didn’t take long for the kiddos to try it out, and the mason jars are just fine! These sleeves protect the glass from shattering all over the floor, and are easy to clean.

J
Jennifer K.
Just what I wanted.

I was looking for a protective cover for my mason jar that would block light (to preserve the contents better). This sleeve fit perfectly, doesn't fall off but is easy to put on. It is a nice thickness with a cute design and does all I had hoped. So, I bought more. :)

P
Philicia Mitchell

Great addition to the mason jar that can be protected.

B
Bethany Novak
Nice quality

I got these for baby bottle covers and baby food jars. They’re thick and good quality. Easy to put on, but they don’t easily fall off. Nice selection of colors too.

L
Latu Anitoni
Adorable, perfect fit

These were the perfect fit, not too snug that you couldn't remove them, but not to loose that they fall off. They protect the jars, which is perfect because I'm using them for home made mason jar bottles

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