JIUFENTIAN Copper Knee brace real 60% Copper ion fiber+21% Nylon+16% Polyester+Latex, Copper Knee brace can help you relieve knee pain, joint pain, knee inflammation, synovial bursitis and synovitis. Studies have shown that copper fiber material significantly reduces inflammation, swelling and relieves muscle soreness. Compression knee sleeve provide excellent compression, enhance support, keep joints stable and effectively reduce knee pain after exercise. Knee compression sleeve keep the knee warm, lubricate the joint and speed recovery from knee injuries. The latest knitting process provides a successful fit no matter how you move, and the comfortable non-slip elasticity holds the sleeve in place, we have experimented and the knee pads remain in place after two hours in the gym. Please choose the right size, we offer six sizes M/L/XL/XXL/XXXL/XXXXL.