Secure Yet Flexible Fit: Designed to fit snugly on tall, straight-sided 24oz wide mouth Mason jars, this silicone sleeve helps keep your jar easier to grip and less likely to slip from your hand. The flexible silicone stretches enough to make it easier to put on and remove while still holding securely during everyday use.

Added Cushioning & Light Insulation: The sleeve adds a protective layer around your jar to help cushion against bumps and reduce the chance of breakage. It also provides light insulation, making hot or cold drinks more comfortable to hold.

Family-Friendly Colors: Choose different colors so each family member can easily identify their own jar. The sleeve can also help block light from the contents of your jar or provide a little privacy for what’s inside.

Microwave, Freezer, and Heat Safe: The sleeve can stay on your jar in the microwave, freezer, or while handling warm drinks and foods. It’s a convenient option for heating drinks, warming jarred food, or using frozen Mason jar meals.

Easy Cleaning & Dishwasher Safe: Since the sleeve usually doesn’t touch your drink or food, it often just needs a quick rinse. For best results, wash the sleeve separately from the jar to avoid trapped water. It is also dishwasher safe.

Customers often call these Mason jar sleeves koozies, cozies, coozies, kozies, jar insulators, or insulating sleeves. Whatever name you use, they help make your Mason jar easier to grip, more comfortable to hold, and better protected for everyday use.