I ordered these from Amazon after researching knee wraps/bands from various sources on the internet. These looked like the solution to making lifting with the legs safer than without any aids. I used to have knee pain from squatting without any proper support. These gave me the confidence and ability to squat more safely. They are difficult to put onto your legs and recommend reading the instructions to bend them in half and pull them over and around the knee caps. These are a great product that looks to be built to last, but I've only used them for 3 workouts so far. I ordered size medium and I weigh 180 lbs.