This is my first balance ball chair and I love it! I admit, I was skeptical at first, but wanted to try it out anyway. Better than I expected. Makes me sit up straight with little effort and helps my core. Perfect height for my desk as well.
I injured my leg and could not exercise for an extended time. This machine really helped my circulation and balance. It's heavy and not easy to move around. Once I was ready to advance, I gave it to my neighbor with a mobility issue and they saw marked improvement, as well.
Very comfortable chair that will fix your core and lower back issues. Purchased one, tried it for a few weeks at home and I'm buying the 2nd one for my office. I saw it first in one of my coworker's place and she loved it. Inflate it to your preferred comfort level and enjoy being sitting down in the most healthy way. The only thing I'd like to see would be the availability of other different colors.
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