"I bought this cage for my dwarf hamster Clover because I felt like she was getting bored and destructive in her other cage. The second I put her in this habitat, she made herself right at home! The size of the built in food dish is perfect for a dwarf hamster, along with the bottle (which is very easy to refill). Clover LOVES the "down under" feature which gives her room to run around. The miracle about this cage, however, is that Clover is a year old and has never shown any interest in using wheels I have provided her in the past. However, she can't stop running on this wheel! I was worried that the plastic would be too heavy for her to move, but it's actually the perfect weight for a dwarf hamster. I also had second thoughts about the tower addition because the tube looked rather wide and too long of a drop if she tried to get down from the tower. As it turns out, Clover has so much fun climbing up the tube and finding treats that I hide for her in the tower and then safely climbing down.
All in all, I think this is a fantastic purchase for someone who plans to house one or maybe two dwarf hamsters inside of it. I think it would be too small for a Syrian or Teddy Bear hamster, though."