Size:S:length:18cm,upper thigh:17-20cm. M:length:21cm,upper thigh:22-27cm. 360 Degree Support: Mild compression ensures stability and improves balance between muscle groups for full support and prevents injuries from turning into more serious conditions. Pain relief: Helps reduce inflammation by increasing joint temperature, reducing pain from cruciate ligament injuries, osteoarthritis and kneecap problems. Fast Recovery: Optimal joint temperature increases blood circulation, improves oxygen delivery, and improves performance for faster recovery. High-performance neoprene provides enhanced elasticity to better accommodate dog legs. Some dogs have sagging hips and the upper belt may slide back.