We have a terrarium that attaches (via a flexispout) to a cage. It makes for a very nice habitat for critters. Also have a mostly full bag of duff for the bottom of the cage. You attach a piece of cardboard or something like that to the flexispout on the terrarium side for them to get up into the flexispout, or you can have boxes or something for them to crawl up to access the flexispout. Water bottle included. Also a smaller cage included for transport or when cleaning the cage. It's been used. It's not shiny and new, but it's a nice habitat for rats or a hamster.