caution! This item is used to support HOCK, not KNEE. Please measure before ordering. Measure the circumference 2 inches above the rear hock and 2 inches below the hock. Product Circumference - Size X-Large Above: 7.5; Bottom: 6.25. Product Length - 9 inches. Features: 1: Our leg braces will heal pain caused by injury or surgery. 2: Provides support and stability during injury. 3: Help them reduce inflammation. 4: Contributes to the loss of stability caused by arthritis. Great for wrapping the legs to cover cuts and wounds. Simply bandage the wound and wrap it with our extra support dog leg brace to keep your dog from licking and chewing. Your dog can suffer from a number of knee-related injuries because it keeps jumping over fences or garden injuries. Our extra support canine leg dog joint brace is designed to provide maximum support and stability while remaining light and flexible. Helps with: Fatigue Hock Stability After Injury Any Canine Hock Arthritis Post-operative Support This therapeutic dog joint brace is a therapeutic product clinically proven to reduce pain and chronic inflammation. QUALITY GUARANTEE - This dog joint wrap is made of neoprene sponge rubber fabric. Neoprene is thick (5mm) and soft and is often used in wetsuits. The soft sponge can be patted to care for dog wounds and relieve dog joint pain, and will not affect your dog's mobility also.