Features: 1. Copper Knee Brace: Ergonomically designed knee sleeves for arthritis pain relief and support with optimal compression technology for total protection. Provides cushioning and decompression, helps disperse pressure on the knee joint, improves blood circulation, and supports injury prevention. 2. Scientific Design: Precision 3D knitting technology with high-elastic, breathable compression fabric that wraps 360 around the knee for a perfect fit. Ideal for sports protection and recovery. 3. Targeted Relief & Support: Designed with copper-infused fabric that helps reduce inflammation and swelling, and relieve muscle soreness. The material helps retain warmth, reduce stiffness, and support joint comfort. 4. Comfortable To Wear: Features non-slip silicone strips and high-elastic fabric to prevent slipping or rolling during activity. Breathable air-knit fabric wicks away moisture. Thin and lightweight design allows for comfortable wear under clothing or during sleep. 5. Versatile Use: Suitable for various physical activities including hiking, running, cycling, gym workouts, weightlifting, basketball, volleyball, and tennis. Specification: Material: Nylon Color: Brown Size: Length x Fit Leg Circumference S: 25 x 30-36cm M: 26 x 36-42cm L: 27 x 42-48cm XL: 28 x 48-54cm Weight: 57g Package Included: 2 x Copper Knee Sleeves