It a square bed that is suppose to fit in a oval opening. Don’t like that but, it was too late to send it back because my pet was laying on it. I’m not happy with the design because there are voids where the bed should go and it is just simply a poor design! If they would have made the bed (the part the animal lays on) oval shaped then this would be a good bed. Just disappointed and the pillow part the animal sleeps on is under filled. Very disappointed dont waste your money on this!