PURE-AID KNITTED Knee SUPPORT PROTECTOR L XL Pure-Aid Knitted Knee support is designed to provide optimal support to stiff, weak or injured knee. * Uniform compression * Breathable and flexible * Provides mild support for weak or injured knee * Can also be used as a sport support brace for tennis basketball and other sports * Stretch knitted material conforms to your curve * Made of polyester, dacron, rubber, contains latexI like them so much that I am going to order another pair. Helps with knee support and pain. Great value. A real help for me. its only been a few days, so I cannot give 5. BUT I was foolishly running down hill on pavement (concrete) and really did a job on my knee It was hurting for almost 3 weeks before I even decided to get a compression type sleeve. On a scale of 1-10, it was a constant 6-7. Since I have been using the sleeve, and only in the day, while at work, I feel I am at a 1-2.This is definitely worth it.Comfortable. I probably could have went down 1 size for more snugness, but L/XL isn't too big.