These can holders are constructed from 3mm Neoprene "Wetsuit" rubber. They are designed to keep your favorite beverage COLD... and your hands WARM! The full glued-in bottom means your beverage won't drip on you. The neoprene construction means it is easy to remove the bottle from the holder - no pliers needed. The Kolder Holder will fit in the console of your car truck golf cart or boat.