Can remove the lid hand wash, which is very convenient and easy to clean. Could be long-term used,easy to move from one location to another,High quality and sturdy. Sponge is a heavy rubber sponge, do not worry about the stairs will be easy to deformation. High breathable mesh design, the dog sitting on the above comfortable and safe. Size: L26.3” x W15.3” x H7.8”; Dog weight can be used within 40kg.