Premier Equine Ice BootsPockets sewn onto the inside of the boots can be filled with crushed ice, which will slowly permeate through to the horses leg providing ice cold treatment. These ice boots come up high over the knee hock for maximum coverage and cooling. Horse Ice Boot Key features Pockets on the inside surface hold crushed ice Neoprene is insulated to hold the cold longer and will not absorb moisture Elastic pockets eliminate the trauma of crushed ice directly