You couldn't pay me enough to sleep in that habitrail...lol..not because I'm too fat to fit through that crawl thru hole even if it was lubed up with a cab floor mounted joust device, but really, I have certain standards that I adhere to...lol..and being thought of as a hamster is something that I will not glorify..lol..I wouldn't sleep in one of these unless it had the roof top window opening like this one. Much better design here by Lamar. View attachment 21266