Dwarf Hamster Exercise Ball 12cm 4.73inch Transparent Hamster Ball Running Hamster Wheel Exercise Ball Suitable for Hamsters Less Than 4 inches 10 cm in Length(S, Blue A)

I have a robo hamster, they’re a little smaller so I got the small & it is the perfect size for him. He loves it!

Perfect for mini hamster. Just be sure you get the openening on good before you let them loose

Used for hamster. When he rolled into furniture the ball cracked and fell apart.

My hamster’s paw got stuck in one of the slits. I took her out because she was just sitting instead of running like usual in her ball. I didn’t know why until I took her out. 🥺 She’s no quitter. She wouldn’t crawl on my hand until it healed. She’s using her nub and wobbling along.

Good for mini hamsters but the top opens easily

They make it look large by photoshopping a small hamster in the ball....beware...too small.

We put this ball together and could not get it to come apart. The knobs for opening it would not twist far enough to actually open. Finally had to use tools to get it apart so we could ship it back. Thankfully we did a trial run before letting our hamster use it - definitely would have been a traumatic experience for him. Also, the air holes are very large so if your animal poops, be prepared to go on a treasure hunt for all the jewels left behind.

So its poorly made it doesnt snap together the little pieces hold the two halves together and not that great i fear my darwf hamster will knock into something and it will come open. Of course i won't let him go unsupervised in it but it does make me uncomfortable for the face they are fast and don't want to lose him because he is for my young kids so be careful and always supervise just to be sure it doesn't come open

I wouldn't recommend this size for a larger hamster. Its quite small. It is perfect for a dwarf hamster 🐹