I got this Katee Run-About 7" Exercise Ball in clear today and I have to say I am very pleased with it.
1- The plastic is more durable than Kaytee's competitors "hamster balls" and has a little 'give' in the material. It's also not slick or terribly smooth. It also doesn't make that tin-like clanking as it rolls across hard surfaces. The material this ball is made out of kind of 'grips' all kinds of flooring.
2- I have tile, lanolin, hard wood, and carpeted rooms, and my 8 week old "Black Bear" Syrian Teddy Bear Hamster -Lorne- mastered the ball within minutes and had no issues with any of these surfaces while in the Run-About ball. And I believe there is room for him to use it as he grows larger. His potential 5-7" adult size was a concern of mine, that he might outgrow the ball. But I no longer believe that will be an issue.
3- The plastic of the ball it's self has no odor that I can detect. In addition the lid on the ball I received is nice and tight, and doesn't need much effort or maneuvering to open or close. If the lid was easier to open, I'd be concerned it would come loose while in 'hamster-use.'
4- This ball is not nearly as fragile as several other "hamster balls" on the market. And it can take some mild abuse when the hamster runs into things like chair legs, doors, or walls at full throttle. And the ball doesn't easily scuff.
5- I also appreciate the fact that the plastic is much clearer than I expected. Not only can my hamster see, but I can see him.
6- At under $5.00($4.42 drop shipped to my local Wal*Mart) you can't go wrong with this product!!! It's additionally such a nice alternative for my hamster, since I imagine that running in his saucer gets redundant. There's no sense of accomplishment running essentially in one spot. Where as the ball allows him to run as fast as he wants & to explore, and he can sniff objects through one of any of the 2 dozen air slits in the ball, then to move on with a secure feeling of being impervious to danger, and experience a bit of instinctual freedom.
-If you allow your hamster to exercise, it is less likely to be nasty, hang upside down from cage lids and act like a nutcase, and try to escape. They are hunter gatherers in the wild, and cover a lot of area each day, being in a cage is boring, so... give it a job to do! Get this Kaytee Run-About 7-Inch Exercise Ball.
Con: The outside texture, although crystal clear, tends to pick up minute fuzz and pet hair off of the floor. It does not appear to be because of 'static cling.' But it comes right off when you swish it with your fingers.