Boots To Protect and Support Your Horse. provide the perfect protection for your horse's fetlocks and cannon bones regardless of your discipline. Usable for both the front and hind legs, they provide extra support at the stroke areas. This high quality boot has neoprene lining to increase protection, add comfort and support to both the cannon and fetlock areas of the legs. Three reinforced Velcro straps assure a comfortable, secure fit making them easy to use.