“Desk jockeys, you can help boost your strength, energy levels, and overall bodily health by switching to the Gaiam Custom Fit Balance Ball Chair system. This innovative seating solution turns a standard balance ball into a comfortable, posture-improving chair without sacrificing function. You’ll improve back and core strength while you sit, by engaging smaller supporting muscles, and will also see an improvement in circulation and upper body mobility. The included, 55-centimeter balance ball is removable, and can be incorporated into quick between-meeting stretching sessions, or used as your go-to at-home yoga ball.”
Get it from Amazon.com – $95.98