This cage is great. I would recommend it to anybody with a small pet. I have 4 rats and there is plenty of room for more in there. It came in one big box and it is basically a big puzzle, there are no tools required to put it together. It took me probably 1-2 hours to put together by myself, but I thought it was kinda fun. My rats love it, they had a blast running up and down and climbing and just checking the place out. It looks so nice too. I just love everything about it. Although it was quite heavy, that is just a sign that it is made very well, which it is.