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Keep your favorite drinks hot or cold longer with these slim but durable and effective neoprene insulation sleeves. Unlike inferior insulating cozies, our great looking sleeves feature premium quality neoprene and reinforced stitching, ensuring durability and long life. They absorb condensation while making handling hot and cold drinks more comfortable. Our sleeves are very stretchable so they'll fit virtually any sized mason jars, including the larger 24oz and quart sizes. They can even fold and roll down to fit smaller jar sizes. They also add a layer of protection to prevent your glass jars from cracking without adding bulk. Their thin profile allows them to stand up without tipping over. These mason jar insulators feature a reversible gray-colored sleeve that can turned inside out to basic black. They also come in reversible teal and purple. They feature a sturdy tab loop that makes them easy to pull on and off and provides one-finger carrying. And their quality materials and reinforced construction make them easy to care for: they are machine washable for easy cleaning. Trust Masontops for the very best in mason jar accessories!
Triple Layer Insulation
Masontops jar sleeves feature premium quality triple layer neoprene and polyester fabric. They'll keep your favorite beverages hot or cold longer and make your drinks more comfortable to hold in your hand. They absorb condensation so you won't get rings on furniture.
Fits Virtually All Jar Sizes
Your Masontops sleeves are made of durable and very stretchy neoprene and polyester, so they'll snug the range of wide mouth mason jar sizes, including the larger 24oz and quart sizes. They can be even be folded down to fit smaller jars. Trust Masontops for a custom fit every time!
Stylish Reversible Color Options
This gray sleeve is reversible, so you can choose to turn it inside out for a basic black sleeve. They also come in reversible teal and purple. These great looking sleeves add a stylish yet practical touch to your mason jars. You'll love how they dress up and protect your drinking jars!
Machine Washable
Their reinforced stitching and premium quality fabric enables these cozies to stand up to years of use without losing their stretchability. That also make them their super easy to keep clean, just toss them in your washing machine! Enjoy years of use with these long lasting and easy to maintain jar sleeves.
Part of an Award-Winning Brand
We've Got Your Jar Covered
These attractive and functional jar sleeves are made of highly stretchable neoprene fabric with reinforced stitching and will fit just about any mason jar type or size. From the large quart sizes down to 16 ounce jars, they're a snug fit. They'll even fold down to wrap smaller regular mouth jars! And the tab loop makes them easy on, easy off. Set of 2.
From the Mason Jar Experts
Masontops is the name to trust for premium quality mason jars and feature-packed accessories. Our triple layer insulation sleeves are made of premium quality machine washable neoprene and polyester with reinforced stitching for years of enjoyment. So trust the Masontops name and enjoy your favorite drinks in style and comfort. We make custom fit mason jar tools and accessories for beverages, fermentation, sprouting and more!
Part of an Award-Winning Brand
Masontops focuses on making accessories for Mason jars, with a special emphasis on health and wellness. Founded in 2014, Masontops has been recognized as Canada’s 8th Fastest Growing Start Up and has since grown to offer hundreds of different products under the Masontops, Breadsmart and Dinneractive brands. Headquartered in Toronto, Masontops strives to offer quality, unique products, all designed in-house.
Laurel
Reviewed in Canada on March 27, 2025
Bought these specifically for drinking arizona iced teas and they fit perfectly. Exactly what I wanted.
Deb
Reviewed in Canada on February 9, 2025
Nice feel to the material. A little snug on quart jars and too tall for pints fits pint and a half perfectly
Megan
Reviewed in the United States on February 22, 2025
These are great. I actually bought them to go on half and half cartons on a coffee bar. They fit snuggly and are washable.
MagaMoni
Reviewed in the United States on January 17, 2025
I like these, but they don't insulate as well as I would like them too.
chananelb
Reviewed in the United States on January 12, 2025
works well for newer soda stream seltzer bottles
Ryan
Reviewed in the United States on January 10, 2025
I like to have my morning cold brew out of an old pickle jar, and this is a perfect fit to keep the sweat off my desk and keep the ice a little longer.It's honestly kind of awesome.
TheVig611
Reviewed in the United States on April 7, 2025
Comfortable in hand... keeps hand protected from hot/cold drinks. Helps insulate beverage.Does what it does.
Lake
Reviewed in Canada on August 23, 2024
these are great. they keep the glass jars from smashing against each other in the cooler. I actually dropped one full of water and it did not break. I would suggest you try that, I have a feeling i just got lucky but still. they fit perfectly for the 26oz jars
30somethingCT
Reviewed in the United States on May 15, 2024
I use these all the time. No condensation leaks through, and keeps drinks cold for a long time. They’re a tight fit on ball jars, but it’s still easy to get in and out. I keep the top rolled down for my shorter mason jars, which is easy to do. I haven’t tried washing them yet but they seem sturdy enough to take it.
Customer
Reviewed in the United States on March 20, 2024
I love using my mason jars for iced coffee, but was hoping to find something that gets me using them for more. I partnered these with some twist tops and now I can use my mason jars as an easy to clean water bottle. I like that they keep my beverage cool, minimize the sweating and help protect my jars from getting banged around by the kids (and me) when on the go. I also like that they have a little loop to make it easier to carry when my arms are full. I have used these on different sizes of wide mouth mason jars and they work great.
Ryan & Staci
Reviewed in the United States on November 30, 2024
Description says that it fits a 16-24 Oz bottle. Purchased the 16 oz bottle from Masontops and it might as well be a tent. Completely useless until I can find a different bottle that it actually fits. Kind of disappointing that the company that makes both items doesn’t work together.
JPDesaulniers
Reviewed in Canada on October 9, 2022
This sleeve is great for insulating and protecting a glass Mason jar. I use one as a coffee mug/beverage container daily, and no matter how hot the beverage, it is comfortable in the hand. Also, it has been knocked off of a worktable once onto a cement floor, and it absorbed the impact enough that the glass took no damage whatsoever.
Steven
Reviewed in Australia on July 26, 2021
It’s great works perfectly Can’t believe I didn’t think about buying one earlier 10/10
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