This strap has been a huge help in my recovery from knee replacement surgery. My only complaint is that it needs one more grip in the very center of strap, when I try to use it to pull my leg inward, I have to put the grip on one side or the other of center, so when I go to pull, one side of the strap is shorter than the other and I have to reach farther to get the grip I need. If there was an extra grip, both sides would be the same length and I could get an even grip and pull. My Physical Therapist, who uses the same item, agrees and never thought of that shortcoming.