[size]: l for all small, medium and large dogs and pets. Please follow the size chart to choose the right size for your dog. [Material]: Injured Pet Knee Pads are made of soft neoprene and mesh material, with delicate and breathable feeling . The comfortable neoprene provides elasticity to the dog's legs and protects the injury area, while the mesh webbing provides stability. Your dog will feel comfortable. [Support and Faster Recovery]: This protector protects your dog from injuries, seams, bandages, hot spots and skin problems, and provides elbow support. It is highly recommended to be used for rehabilitation to improve exercise capacity and build stronger muscles. [easy to use]: just wrap the leg, cover the wound with the opening above the hock, then adjust the ties to fit your dog and secure them in place. [warm tips]: Although this dog rehab kit is designed for daily use, we recommend removing the support 2-3 times a day and letting your legs breathe at night to keep your dog healthy.