I bought two of these at the same time, one for each of my cats.  As soon as I unwrapped the first one, and set it on the floor, my cat walked over, sniffed it, jumped in, and took a two hour nap.  He didn't want to get out.  I really like it because it's spacious enough for both of my big cats (non-overweight at 12 and 15 pounds respectively), but I can fit both of them in the front seat of my car.  I can also fold them up and chunk them in a closet without damaging them if I need to make room for something.  Great product!  I actually sent Archie & Oscar an e-mail telling them so.  The bottom is well-padded and the dome shape allows my cats security but lets them look around too.  Great price on wayfair too!