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Title: Cool product seems worth it
Review: Its a cool product definitely worth its value.I have been suffering from lower back pain. On the flexible ball which I use as a chair in my office, I could find several seating postures which relax me. I donot feel anything difficult sitting on the ball- I feel very much like normal chair-I like it :) I am 5'7" and I ordered for 75cm ball. I just didnot inflate to the maximum- may be till 65cm or so-but if you are taller than me may be you shud go for bigger ball. they have an inflating pump which is cool.
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