Does absolutely nothing. Don’t waste your money. Read more

For those of us with mid-back or upper-back pain, 95% of the "back things" out there for sale are not for is. But this one is. It puts a nice amount of pressure on the muscles on either side of the spine, helping them relax. It can also help with stiffness/spinal flexibility, especially when used on the floor (I don't feel quite as much from it using it on the bed because it sinks into the bed a little). It feels kind of nice on neck muscles too, although specially-designed things meant for the neck might do a better job there. Read more