Most of the commercial yoga balls only go to 85cm this one is 120cm. It’s pretty bi, but you wont have to bend over working on rolling over or tummy time on this therapy ball. Because Kam gets so much input from the ball he really activates himself a lot more versus if I try to just put him on the floor. Working on sitting works well too and you’re not breaking your back doing it.
A 48 inch ball is equivalent to 120cm. My favorite brand they use in therapy is a Physioball, but those are hard to find.