[Worry-free Shopping] Our copper knee brace are primarily based on compressive and copper ion fiber to exert constant pressure on the knee joint, providing muscle support during exercise and leisure activities. If your size is wrong, it will be too small or slip down. Please feel free to contact us to get the right size. [Professional]JIUFENTIAN copper knee brace for men and women is ideal for work that require regular use of the knee, such as standing work, morning walks, hiking, running, ball games, cycling and gym workouts (including the elderly). The knee brace for knee pain is ideal for arthritis, swelling, meniscus and post-operative knee recovery. [NoN-SLIP Grip] : Double-layer anti-slip strip. You will love the feeling of sport with our copper knee sleeves. but please be sure to follow our size chart to measure and choose your size instead of your habits. Latex / Silicone people allergic caution. [Copper nylon] 60% copper ion fiber + 21% nylon + 16% polyester. copper ion helps to promote blood circulation and relieve pain and swelling, JIUFENTIAN uses the latest weaving technology to weave copper ion fiber into knee sleeves to help relieve knee pain and also more breathable and sweat absorbent. [Compression Protection] To better fit the knee compression sleeves to the curve of the knee, we use 3D compression technology to achieve full protection of the knee, help stabilize the patella, reduce the wear and tear of the patella during activity, cushion and reduce pressure, protect the knee joint from injury. Copper ion fiber/Nylon/Polyester/Latex/Spandex.