Love the chair...I have a ball which forces me to sit up straight and balance...does that chair just hold the ball in place? I straddle my ball so it's not conducive to wearing a dress or skirt

 

Yes, the chair just stabilizes the ball. I still find myself slumping, though. I have to consciously sit with both feet in front of me and keep my back straight. And then there's the moments when my chair rolls off the mat and catches when I try to roll back on and damn near catapults me off.