We have four sizes of this pet knee pad to choose from, please purchase according to your actual needs The curve design perfectly matches the dog's hocks and fits comfortably. Each rear leg support is equipped with 4 reflective velcro straps, which can fix the support around the hock joint without moving or slipping, and more importantly, providing visibility and safety in the dark This dog knee pad is made of 4mm high-quality neoprene rubber and nylon lining. It is soft and durable, does not rub, pinch or damage the skin, and is suitable for long-term wear and repeated use A top dog brace recommended by a veterinarian. Supports the dogs hind legs, hocks and ankles, dogs with knee problems and ACL or CCL tears also benefit from this brace Dog leg knee pads are very useful treatment products. It can better take care of the dogs wounds, relieve the dogs joint pain and prevent them from being injured in the future.