Consisting of a neoprene exterior, the interior of the boot is infused with state-of-the-art Welltex fabric, which contains ceramic powder. The ceramic reflects your horse's natural body warmth and creates a soothing far infrared thermal warmth. Warmth therapy is a well-recognized method used to help relieve and heal injured muscles, joints, and tendons. Contoured to the shape of the knee, the boot fastens with straps allowing you to adjust the fit. When using these boots it helps to use standing wraps to prevent them from sliding down.