The photo above is for the AB Exerciser Ball™.
The 9" version.
Look at the photo. I mean really look at the photo.
Maybe you're like me and you're thinking, "Gee. The Exersizer Ball™ is probably a pain in the..."
Naw. That's too easy.
But I will state this. Once used per the photo, the Exersizer Ball is truly yours. Used as directed, who's going to want to borrow it?