SIZE: XS: thigh circumference 17-20, joint circumference 11-13, ankle circumference 7-10, leg height 16 S: thigh circumference 22-25, joint circumference 13-16, ankle circumference 10-14, leg height 20 M: thigh circumference 29-32, joint circumference 17-20, ankle circumference 13-16, leg height 25 L: thigh circumference 36-39 joint circumference 22-25 ankle circumference 16-19 leg height 30 The Right Choice: If your dog is struggling with a post-knee surgery process, ease its pain and discomfort with the dog leg brace! Our knee support brace for dogs is designed to help support recovery, knee and joint articulation, so your beloved pet can run and play as before. Materials: Our knee brace for dogs is made with premium quality neoprene, which is extremely durable, strong but also elastic and breathable, offering your dog both excellent comfort and superior mobility. Excellent Knee Support: This professional dog leg sleeve is most suitable for knee and joint injuries and post-surgery recovery, as it can help alleviate pain and discomfort and maintain the joint in the right position for support and stabilization. Enhanced Recovery: The joint support knee brace is very comfortable and breathable but also can help reduce inflammation and pain. Also, it can help enhance performance and improve recovery time, while helping your dog perform its regular activities to stay in shape during the recovery. Take care to remove the sheath 2-3 times a day and let the legs breathe at night.