What is the fitness equipment called that has a dome that you stand on for balance improvement?

This piece of equipment has a circular base and a rubber dome that you stand on to improve your balance. It's hard to find one if you don't know what it is called, can someone enlighten me?



Thanks!!What is the fitness equipment called that has a dome that you stand on for balance improvement?BOSU ball (stands for "both sides up," because you can use it with either side up or down)What is the fitness equipment called that has a dome that you stand on for balance improvement?answerWhat is the fitness equipment called that has a dome that you stand on for balance improvement?Neuromuscular physioballWhat is the fitness equipment called that has a dome that you stand on for balance improvement?
Balance board



Wobble board



http://www.google.co.uk/search?q=balance鈥?/a>