Bought these for my two adult chins. The male is tiny, but he was somewhat cramped in it and only used this until I added a fleece house - now he only uses this for a platform. It's also not heavy or stable enough for them to use as a platform - on shavings it will tip slightly and startle them when they jump on it. Additionally, they jump on it with enough force that the top comes off daily, so eventually I had to nail it down so they wouldn't fall on it awkwardly.The female is much longer than the male, and she looked really uncomfortable in this whenever she had to turn around in it. She too abandoned it, and I didn't even give her an alternate nest box.I know the price is attractive, but now I have two houses that I'm going to pull out and replace with more substantial, large boxes. I definitely don't recommend this house type at all.