S: Thigh circumference 29-32cm, joint circumference 17-20cm, foot circumference 13-16cm, leg length 25cm. M: Thigh circumference 36-39cm, joint circumference 22-25cm, foot circumference 16-19cm, leg length 30cm. L: Thigh circumference 43-46cm, joint circumference 27-30cm, foot circumference 19-22cm, leg length 35cm. 360 SUPPORT: Light compression provides stability and improves balance among muscle groups for full support and helps prevent injuries from worsening. Refer to the product video and follow sizing instructions to select the correct size. Size chart is available in the images. PAIN RELIEF: Helps reduce pain associated with cruciate ligament injuries, osteoarthritis, and kneecap issues by promoting increased joint warmth and reducing inflammation. FAST RECOVERY: Optimal joint warmth enhances blood circulation, improves oxygen delivery, and supports improved performance for faster recovery. VETERINARIAN DESIGNED: Knee brace is engineered to provide superior support and comfort while maintaining your dog's mobility. High-performance neoprene offers enhanced elasticity for a secure, adaptive fit. Note: For dogs with hip conformation issues, the upper strap may shift or slip during movement. STRONG SUPPORT: The knee brace features 2mm neoprene construction and provides flexible, light compression to support blood flow and promote faster recovery.