what is a koozie
A Kooze isâ¦. Koozie [koo-zee] â noun: A koozie is a neoprene, fabric or foam device that is designed to keep your beverage in your bottle and/or can cold (or hot!) while keeping your hand at a normal temperature. Think of a Koozie like a jacket for your beverage that maintains it at the desired temperature. Your very own portable insulation device!