Review (1/5): Terrible!
Product description states,"No Slip Cups that Stick to any surface!" Yeah, sure--if you nail it to the shower floor! This thing didn't stick at all, and constantly moved around--had to use the other foot to hold it down while trying to use it. That worked. The other issue is the top ring. I have size 10 1/2 feet and when using this, combined with it moving around, caught my pinky toe on the edge of the ring and ripped my toenail off. Not only have I returned it, but threatened legal action. Stay away from this junk!