I purchased Body Align Relief Disc as a gift, kind of a novelty, then I injured my hip, unable to sit or stand comfortably, my wife reminded me that we had the Relief Disc from Body Align. We gave it a try and totally "Blew my Mind", after about 30-40 minutes I was up and around, functioining with greatly diminished pain. I thought I was "down for the count" unable to work, walk or sit comfortably. The Body Align product is a phenomenal, revolutionizing solution to pain management.