Professional's Choice Hock Ice Boots are designed to provide effective cooling therapy that lasts longer. The boots feature a neoprene exterior that insulates the interior frozen gel pockets that keeps them cold. For the lining, a smooth nylon material ensures the skin does not get damaged from ice exposure, as well as keeps the boot free of shavings, dirt, or other debris. The practical design with simple hook and loop straps allows for ease of use and a custom fit for each horse.