MaterialMainly made of Arctic velvet + diamond velvet ,sponge and pp cotton,very soft and warm, keep your pet away from the cold.3 Size Optional of Pet House: the Length x Width x Height approx : Small size is 15.8x12.9x13.8inch (for pets under 8.8lb.)/ Medium size is 18.1x14.6x15.8 inch( for pets under 16.5lb.)/ Large Size is 20.5.x16.9x19.7 inch( for pets under 30.9lb.).Please refer to the size parameters to select suitable Pet House before ordering it,thank youCozy House, Warm all day: Soft & Comfortable of unique Pet house offers a safe, cozy place for a cat or small dog to snooze, gives your pet a touch of privacy and creates a nice sense of security. The cushion also can be taken out, convenient to clean.Non-Slip Bottom: the Non-skid bottom backinghelps keep the bed in one place inside your pet& 39;s crate or on the floors, can be placed in a balcony corridor or other places without worrying about sliding, providing a warm and dry shelter for pets.Folding design: The top puppy dog house is detachable and foldable for easy carry and store, no tools required for assembly. For per pet house, we try our best to make it with fine workmanship, precise sewing, invisible corners, strong seams. If you have any problems and questions please feel free to contact with us.",