MLB Arizona Diamondbacks Zippered 12oz. Bottle Koozie - Black Kolder Bottle Suit Holders These bottle holders are constructed from 3mm Neoprene Wetsuit rubber, and will hold a longneck bottle. They are designed to keep your favorite beverage COLD... and your hands WARM! The full gluedin bottom means your beer wont drip on you! The neoprene construction & the zipper makes it easy to remove the bottle from the holder no pliers needed. It?s stretchable, washable and foldable. Made by Kolder.