The OS1ST KS7 Performance Knee Sleeve targets an abundance of injuries while also aiding you in performing at your best. This knee sleeve is made of LYCRA® Spandex and Nylon with a patented compression Zone Technology™ that you can wear comfortably under your everyday apparel for extra protection. It supports and stabilizes the patella to improve circulation, plus targets arthritis, runner's knee, swelling, knee pain, Iliotibial Band Syndrome, and Patellar Tendonitis. Lead a safe and healthy active lifestyle with the OS1ST KS7 Performance Knee Sleeve.