This product is a Japanese original design, specially designed for pets. Detachable biscuit box shaped pet bed. It is eay to storage. Both the outside package and the interior can be used as a pet nest. Thickened sponge can give pets deeper sleep. And it adds wools into all side, it is warm and comfortable. Anti-slip bottom is not easy to turn turtle. It has 5 styles, you can choose whichever style you like!