I have spine and hip problems that can be very painful and I have had an elite bioflow for about 30 odd years to help which it does, now due to age I found if it got knocked I got bruises on my wrist. I decided to get another and went for the silicone Breast cancer Bioflow and am very happy with it and pleased a percentage of the price goes to great cancer. It is comfy to wear and I get no bruises. As the elite still works I put the catch on the end of the strap and now wear it on my ankle and get the benefit of 2 magnets. Wearing a Bioflow I find that I do not need to take many painkillers which to me is a bonus. I also have a Bioflow collar which has been used on 4 dogs and is now here for my dog when he needs it... I used it on on my dog years ago when she cried getting up, after a few days she was still still but no longer cried. As you can't tell a dog what you have put on them it proved to me that the Bioflow does work...