The tendon boots are made of strong neoprene. Their excellent fit is characteristic of these boots, as they conform closely to the tendon and fetlock. They have a hook-and-loop closure. They can be used preventatively to minimize the risk of injury or inflammation. They're a good alternative to bandaging with an underlay. Available in black and white. Sold in pairs in sizes small (H24 x W26), medium (27 x 27), and large (29 x 28).