Product Description
Wide mouth pint jars have straight sides and are 3" internal diameter.
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 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.
These are designed for current production Ball jars - Kerr jars are quite tight.
I drink my coffee from a wide mouth pint jar every morning. My silicone sleeve keeps my hands safe, and if I need to leave the house I screw on a wide mouth silicone drinking lid.
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.
You could also use one to block sunlight or prying eyes from the contents of your jar.
Great for kids and adults!
Family-Centric Expertise
US-based, family-operated business focused on quality and community.
Expert Customer Care
Friendly, knowledgeable support from your trusted mason jar experts.
Eco-Friendly Innovation
Our products are free from toxins and designed to promote sustainability.
Unbeatable Selection
The widest array of premium mason jar accessories in the market.
These silicone sleeves are very handy for ice coffee. They help keep the jar sweat off the counters and tables as well as insulating the jar. The deep blue looks slightly purple to me, but it doesn't harm it's functionality. Thanks Mason Jar Lifestyle for offering so many great options to make these versatile jars even more versatile.
I actually purchased this for a completely non-mason jar reason. I drive a school bus and my coffee cup won’t sit straight in the cup holders provided. I saw these sleeves and a light went on. They are tall enough to hold my coffee cup upright! Bonus- now I have a sleeve to keep the jar colder and easier to handle for iced coffee too!!
I love these sleeves, I use them to driink my hot coffee cold drinks and I don’t worry about the jars breaking or the ice melting when we take picnics to the beach.
Perfect for my cold sweet tea. Keeps it cold longer.
I’m surprised and delighted by how well this protects my hands from a hot glass jar. The frost color is partly see-through, so I can easily see how much coffee I have left. And MJL has awesome customer service!
Learn More about Mason Jar Lifestyle
Check Out Our Blog
Find the latest recipes, DIY projects, and much more. All created and curated by our Mason jar experts.
Our Story
We're proud to be a Colorado-based small, family-owned business and your home for authentic, eco-friendly mason jar innovations.