Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Tall people only!
Review: You need to be at least 5'8" for this chair to work the proper way, For your legs to be at a 90 degree angle they recommend. No other ball size is available and I contacted Gaiam about the problem but they just said it's not for everyone! Also the ball is very HOT to sit on for any length of time. Good luck with it if you try.
