Copper ion fiber/Nylon/Polyester/Latex/Spandex ?High copper content is injected into the fabric and the copper Knee Sleeves adopts a new type of 3D weaving fabric, which has very good breathability and sweat absorption. rse knee pressure, improve blood circulation, protect knee from injury. ?Non-slip silicone strip, After two hours of continuous exercise in the gym, the sleeves barely slipped, and sweat absorption, breathability is very good. Latex/gel/silicone people allergic caution. ?Give your knee the needed support. Good support for weak or injured knee, meniscus tear ,ACL and Arthritis knee. Helps you relieve pain and recover from it more quickly. ?PROPER COMPRESSION: The copper knee compression sleeves provide the best compression for your knees. Protect your knees from injuries during exercise, tennis, sports, Workout, running and walking.