It's one of those big heavy jobbers that takes up half the room. I need to move it frequently to recover dog toys, chase down creepy critters that get under there. The best part is i didn't need to worry about having enough for my shelf.

They appear durable and meet the intended purpose. They're well-balanced and sturdy, and definitely do the job. Having locks is almost a necessity.

The ball sinks back so far with weight that the plastic surround nearly touches the opposite surface. Immediately popped them off and started a return. Really cheaply made. Be prepared to get frustrated trying to peel off the backing.