[Storyteller.]

I bought one of these when I had a back injury a few years ago and I've gotten some good use out of it since then. I don't use it as a regular chair but it does come in handy for stretching and exercising; since my job is very physically demanding part of my after-work routine involves using my exercise ball to stretch out my back/shoulder muscles, and it not only helps prevent injuries and stiffness but it also just feels really good. I'd definitely recommend them!