Professional's Choice Ice BootProfessional's Choice Ice Boot Neoprene exterior Gel pockets Extended hook straps Sold in pairs The Neoprene exterior of the Ice Boots from Professional's Choice insulates the frozen gel pockets keeping the boots colder longer, thus increasing the therapy time. Smooth nylon lining eliminates the potential for damaging the tissue from exposing the skin directly to ice; while also preventing dirt, shavings and debris from sticking to the boots. Extended