I have several red light wraps............but, I too, am wondering, did i buy the proper ones? Sure they have different levels, but........are they really properly made, or did i also buy junk? One tho, when i wrap it around my thigh, my leg does feel stronger when i stand up , and get around that day. I also just started using a Tens unit, and an ultrasound wand, which is supposed to help regenerate tissue.........The bottom of my feet feel pretty stiff., so i will be able to tell if any of them work. It MIGHT be wishful thinking, but yesterday, they don't feel quite as tight................will be doing another ultrasound this morning. I read where you should only use it up to 3 times a week..................hmmm........hope it is working, and not my imagination