Review on Enhance Your Hamster's Activity with WishLotus Hamster Exercise Ball - 5.51 Inch Transparent Running Wheel for Dwarf Hamsters, Relieves Boredom and Boosts Mental Stimulation by Ashley Grant

This product is easy to assemble but a bit fragile. You need to be careful with the locks and make sure the outside seal is in place before letting your hamster run around. A lot of hamster balls are made this way these days and at half the price of others I would say this is the perfect hamster ball for my robot! My robot is the smallest I've ever seen (6m+) and yet he hasn't really run around it yet because he's so damn small in it lol I think in time he'll get the hang of it. It's cute, crystal clear, and works for what I need.