Features: 1. Copper Knee Brace: Ergonomically designed knee sleeve for arthritis pain relief and support with optimal compression technology for total protection. Provides cushioning and pressure dispersion on the knee joint, helps improve blood circulation, and protects the knee from injury. 2. Scientific Design: Precision 3D knitting technology with high-elastic, breathable compression fabric that fits 360 around the kneecap. Offers a secure, comfortable fit and is ideal for sports protection and pain recovery. 3. Targeted Relief & Support: Designed to provide support and compression to help reduce discomfort. The copper-infused fabric helps retain warmth, may reduce stiffness, and supports joint health. 4. Comfortable To Wear: Features non-slip silicone strips and high-elastic fabric to prevent sliding during activity. Breathable air-knit material wicks away moisture. Thin and lightweight design can be worn under clothing or during sleep without discomfort. 5. Widely Used: 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