Great for relieving back pain!
The 65" ball is perfect for me (5'6"). I can rest my arms comfortably on my desk while I'm typing, and when I need to stand up it takes very little effort compared to hauling my old bones out of a desk chair. I don't get stiff on the ball, although I do have to remind myself not to slouch. I love that the product doesn't smell like chemicals as plastic sometimes does. Sadly, my first ball had a leak, so I'm eagerly awaiting the replacement.
Reviewed by: Lisa from Leesburg, Virginia.