The first one I did was for my cats and my youngest loved it most. She loves crawling into grocery bags, boxes, and all other cat accessible packaging. This one's size is great for a slimmer breed but can stand a little bulk due to the expanding sides when a cat lays down inside it. Not recommended for Maine Coons or larger breeds, my Maine could only sit inside it haha. It's made from a really durable recycled fabric and features a softer yellow mat inside that can be removed for easy hair clean-up.
Measures 11in diameter at bottom and expands internally to 15in diameter.