As always, Professional's Choice strives to produce products that meet the needs of the horse industry, while making our equine companions more comfortable. This holds true with the Sports Medicine Combo Boots. We developed our combo boots with the idea in mind to make a support boot and bell boot combination that does not inhibit the horse's movement. We attached a neoprene bell boot to our award-winning SMB II® using a small leather strip directly beneath the fetlock. This hinge produces a combo boot that allows the horse to be fully protected and still have freedom of movement. Comes in Universal Size