Lami Cell Pro Ice BootsLami Cell's Pro Cooling Therapy Boots combines non toxic Neoprene, with food grade gel that provides dry, cool, and comfortable therapy for your horse's legs. The easily detachable Pro Cooling Gel packs, conform to the horse's leg, to provide the ideal shape and even distribution of cooling temperature during therapy time. Most cooling gel packs last on average of 20 minutes, before they start to have a reverse effect and heat up the horse's tendons