Review on Versatile, Foldable and Transparent Hamster Playpen for Indoor/Outdoor Fun: Ideal for Syrian Hamsters, Rats, Chinchillas, Rabbits, Guinea Pigs, Gerbils, Hedgehogs, and Reptiles by Esther Fisher

I received this to make an extra play area for my hamster. It's a good size, the bottom is thick enough. It folds up easily, if you don't want it to be small enough to put back in your suitcase that's a problem. I simply stacked the panels on top of each other and tucked them away behind the bookshelf when not in use. The only problem was that my little dwarf hamster seems to be an expert climber on this trellis. Realizing this, he continued to try to flee. I had to tape the top to stop it but it didn't work. Now that he has a big cage I don't use him anymore. I really enjoyed it just know it's not escape proof.