Review on Gutongyuan Hamster Ball, 5.5 Inch Running Hamster Wheel - Small Pet Plastic Crystal Exercise Ball Toy for Boredom Relief and Increased Activity by Sally Bienz

When I first got this I tried to put it together but the instructions weren't as clear as they could have been. I also found the ball difficult to assemble even after understanding the instructions. I use it for my gerbils and it keeps falling apart when opening or closing which is very frustrating for me and my little friends who just want to ride. I would consider it barely functional compared to other gerbil/hamster balls I've had in the past. The only reason it didn't get a star is because it works, but I would get tired of leaving your hamster/gerbil unattended in it in case it falls apart while they're inside and they run away.