We bought this cage for our two pet rats, who needed more space. Were very pleased and the cage is worth the small investment. It is sturdy, we love being able to store extra food, fleece, and toys on the bottom shelf, it can be rolled around easily, the big front doors make it really easy to clean or play with the rats, and it is so big! Another huge selling point is that we can buy the addition to add to the top for a few years in the future when we want to get ferrets.