I got two of these stability balls. One is really small and one is really big. The small one is gold and the big one is red.
Personally, I think the gold fits the name of the company much better, Gold’s Gym. My mom exercises on the red one for her back but for now I am completing taking it and making it my own until she needs it. But not just for sitting as well. It is really fun to bounce on. It is like a mini trampoline that I can bounce on my butt while I watch TV. It burns a lot of energy. You can also bounce it like a basketball. And one of my favorite things to do is to throw it at random things, but only if they are not alive.
So try it. Its a lot of fun.
PS: This isn’t an advertisement. …. or is it?