This fit my criteria in that it was height adjustable, able to tilt/wobble side-to-side and front-to-front, could twist/rotate and automatically return back to front facing position. It has a nice cushion (I chose the gray steel) and a small back that I can hang my coat and/or strap my shiatsu massage pillow around. My son who is 5 ft did not like since he has poor core strength and felt like he was going to constantly fall off the stool. I like it since it's exactly what I was looking for to go with my standing desk. I would get fatigued standing and wish I had something to lean or perch on occasionally, or sit for half and hour to hour, before going back to standing. I had already been using my own hard wobble board, but I like the soft but firm wobble cushion that came with the stool - they complement each other well and won't hurt my floor.
It was easy to assemble out of the box. Customer service was also quick and great when I asked for a price adjustment when my item price decreased while my item was being shipped to me. All in all, very happy with this purchase and glad I saved a lot of money (rather than getting the LeanRite Elite or Vari Active Seat).