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 glued-in 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. Made By KOLDER