Ho, ho, ho and a merry Chrismakwanzasolticehannukah!
On one hand, the four wheels recreate the ease of movement that conventional chairs offer. On the other hand, the balance ball seat helps build balance and strength and is as comfortable as it gets.
The chair is really easy to assemble and took me no more than a few minutes — just blow up the ball (with the included pump), slide in the back support, pop in the wheels, and you're ready to go.
The ball is held in place by a metal bar that wraps the front and can easily be lifted out when it needs to double as a prop in exercise (I love/hate doing pushups with my feet up on the ball).
The BalanceBall chair is regularly priced at $99.98 but is on sale right now for $79.98 over at Gaiam. The base of the chair is black, the ball comes in four colors — green, blue, plum and light black.
The "don't sue me FTC" disclosure: Gaiam sent me a free BalanceBall chair for consideration for review. I liked it and wrote this up.