Size:M: Knee pad: 15 * 26cm， suitable weight: 45-50kg， leg circumference: 32-38cmL:Knee pad: 16 * 26cm， suitable weight: 60-75KG， leg circumference: 38-45cmXL: Knee pad: 18 * 28cm， suitable weight: 75-100kg， leg circumference: 45-60cmMultipurpose: This knee sleeve applies compression & warmth to your knee joint to reduce pain and swelling. Use for general knee pain， knee arthritis， patella and ligament issues， knee sprains and strains， knee injury recovery and prevention.Provides excellent SUPPORT to the knees for use in sport activities such as climbing/hiking and even high-impact sports. Promotes muscle recovery and prevent injure.Helps to RELIEVE PAIN ranging from sports injuries to arthritis by improving blood circulation. Through COMFORTABLE PRESSURE and body heat retention， it: 1) improves BLOOD CIRCULATION， 2) WARMS UP your muscles faster due to increasing blood flow thus 3) improving your performance with better MUSCLE SUPPORT and efficiency. BREATHABLE knee sleeve / brace is made from Bamboo charcoal， which is the most breathable material. It can also help absorb sweat easily， while Bamboo charcoal material is known for the perfect moisture absorbent. It also reduces odor from sweat. Keeps knees WARM in cold climates for extreme sports. Bamboo charcoal provides necessary heat retention while keeping the knee warm.