Product Description : Amazon.com Product Description : Promote good posture while working in the office or watching TV at home with the Health Mark BT20000 Swiss ball chair. The Swiss chair comprises a large exercise ball that sits in the middle of a stabilizing cradle with four locking wheels. By sitting upright on the ball, you can simultaneously strengthen your core, abs, and back while also relieving pressure from your shoulders. As an alternative, you can use the ball to perform back extensions, ab crunches, and a host of other toning exercise. And thanks to the locking wheels, the ball makes both a great office chair and an ultra-stable exercise ball. The Swiss chair--which is height adjustable based on the ball pressure--measures 20 inches in diameter and 23 inches tall.Product Description : The Health Mark Body Tone Swiss Chair can be used at the office or at home to promote healthy ergonomic seated posture while strengthening your core muscle group and relieving pressure form your back. The Swiss Chair cradle also locks the exercise ball into place in order to allow for a safe and effective whole body workout. The chair is great for promoting good posture and the wheels are a definite asset. It does take time to build up the muscles to use the chair for extended periods of time. I like the chair a lot, but find that I frequently hit the wheel locks by accident and have to figure out which one is locked. To me this is a design flaw. The chair moves well when all the wheels are unlocked (as it should). I highly recommend this chair over using a ball without wheels. The ball that comes with this chair IS the right size. It just needs to be pumped up all the way. The pump that comes with the kit may be able to do the job ... eventually. I quickly gave up and used my air compressor. This is a well built set, and really is worth the price. Using it, however, is something else. It is a good tool to pump up the core. Looks easy, give it some time. WORTH THE PRICE. I purchased the ball chair a few months ago and am excited to use it. The only signficant downfall is that ALL FOUR wheels are LOCKING wheels. So in your daily routine of getting up sitting down, inevitably your foot hits one of the tabs and 'locks' the wheels. Leaving you potentially trapped OR having to fight against the locked wheel so that you can bend over again and again to unlock them.My solution - find an old chair in our 'desk chair grave yard' and switch out the wheels. Works GREAT now!!! Couldn't be happier or with better posture!
