Features- Product Specification and Features Upgrade with Silicone to offer comprehensive protection to the knees, ideal for jogging and most sports Compared to an ordinary knee brace, this one adds silicone for protecting the knee from injury, and metal strips are added on each side to double the support needed Specifications- Material: silicone/nylon/spring bar Features: 3D knitting technology Size: M/L/XL Color: blue-purple/light grey/red black Function: protect the joint from a sports injury, keeps the knee cap stable and centered for stability without loss of mobility. Package Content 1 x Knee Brace