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 video and follow the instructions to measure properly and 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 joint warmth and reducing inflammation. FAST RECOVERY: Optimal joint warmth enhances blood circulation, improves oxygen delivery, supports performance, and promotes faster recovery. VETERINARIAN PREMIUM QUALITY: Designed and manufactured to provide superior support and comfort without restricting mobility. High-performance neoprene offers enhanced elasticity for a better fit. Note: Some dogs may have a sloped hip structure, which could cause the upper strap to shift or slip. STRONGER SUPPORT: The knee brace is made of 2mm neoprene and is fully flexible. Provides light compression to support blood circulation and aid in the recovery process.