Review on Pharmedoc Exercise Ball Chair With Back Support For Home And Office W/Exercise Yoga Balance Ball, Pump, Removable Back & Lockable Wheels by Kuldip Roberts

This is great, very simple, very easy to assemble. I was worried about the ball not being big enough. Even after waiting 24 hours and re-inflating, it is not as big as I'd like. However, I had another ball I like use with it, so no biggie. I took the back rest thing off, seems pointless and now I can easily turn around and grab something from behind me if need be. I do find it difficult to roll the chair while seated. I have to stand a little and roll it around. That's a little annoying but not as annoying as the insane lower back/butt pain from sitting in my old chair. Overall, I'm happy with my purchase and would recommend. Just get a bigger ball if you have a higher desk.