Mason-re silicone glass jar koozie sleeve.

Ordered from Mason-re.com This is a teal glass mason jar sleeve. Gently used. Notice two little spots on sleeve in the photo. Fits wide mouth jars perfectly (but also smaller mouth jars) From the website: The first and only koozie designed to perfectly fit your wide-mouth pint size mason jar. Made from 100% silicone, this koozie feels great, is eco-friendly, and lets you drink from your mason jars in style. The koozie insulates hot and cold and is microwave and dishwasher safe. Includes: (1) 16oz silicone koozie (available in many colors)