Lami-Cell cooling therapy boots effectively cool your horse's legs for up to 40 minutes. Neoprene cover with Velcro fastening. Cooling pads with Pro Cooling-Gel. The cooling pads are fastened inside the outer boots with Velcro to keep them in place. Put them in the freezer overnight or for at least two hours before use. The boots keep your horse's legs cool for up to 40 minutes. A tip is to gradually accustom your horse to using the cooling boots. Always consult a vet if you're unsure what cooling method is most suitable for your horse.