Worry-free shopping: Our copper knee compression sleeve are not fitted with a spring bracket. They are primarily based on compressive and copper fiber cloth to exert a constant pressure on the knee joint, providing muscle support during exercise and leisure activities. So its support is not as big as other knee supports. Also if you choose the wrong size, it will scroll down or have little support and compression. Please feel free to contact us to get the right size. NoN-SLIP Grip: After two hours of continuous exercise in the gym, the knee sleeve barely slipped. You will love the feeling of athletics with our knee support. But please be sure to follow our size chart instead of your habits. Latex / rubber people allergic caution. Designed for everyday use and outdoor activities-suitable for men and women (including the elderly). knee brace can help you recover faster, reduce joint pain, arthritis,spasms, enjoy the joy of exercise! copper knee support is ideal for work that requires regular knee use, such as weightlifting, basketball, running, jogging, volleyball, CrossFit, gym, tennis, hiking. 60% copper fibre fabric + 40% spandex with high copper content. Research has shown that copper fibre fabric material can reduce inflammation, reduce swelling, deodorise and relieve muscle soreness; arthritis knee support can help you recover faster, reduce joint pain, arthritis, meniscus tear, ACL, sports injury ,cramps and reduce the risk of injury during strenuous exercise. ?Single?Ergonomically designed Copper Knee support for women and men, with the best compression technology, can achieve comprehensive protection. Slow shock and decompression, disperse knee pressure, improve blood circulation, protect knee from injury.