Back on Track 2-Piece Therapeutic Horse Hock Brace with Hole Back on Track Hock Braces are made from fabric infused with ceramic powder; The ceramic reflects natural body heat State-of-the-art therapy is clinically proven to reduce pain and chronic inflammation They offer an excellent fit and superior protection as they easily form close contact with the tendons and bones in the lower leg Back on Track Hock Braces are ideal for injury recovery or prevention in the tough to wrap knee areas Contours to the shape of your dogs hock, the boot fastens with Velcro straps allowing you to easily adjust the fit