I am John L Kill Kelley, the user. You have a superlative product in the strap knee brace which I have been using for about 10 years now. It was at that ten year point when an ortopedist told me that I should have both knees replaced--an earlier ligament/tendon injury and no cartilage in the left and no cartilege left in the right. I have been pain-free all of these ten years, operated a horse breeding farm with my wife during that time and now retired, ride a bike at age 80 for 9 miles every other day. I have basically lived happily after a lot of long-ago distress.. You guys have given me unrestricted activity. I am grateful. This all started with a physical therapist telling me you had the best product on the market. She was right.