This cat sofa features a detachable double-layer cushion: one layer of egg-crate foam and one layer of detachable Pp cotton filling. Fold the Pp cotton cushion to extend the sofa, and your kitten can hide in the gap between the two layers. The Pp surface filling is soft and warm, while the egg-crate foam supports and relaxes pets muscles and joints, providing a safe, comfortable resting space. Removable cushion covers are machine washable for easy cleaning. The cat bed arrives vacuum-packed open carefully, tap and shake to fully expand, and wait 24-48 hours before use. Available sizes: 25"L x 20"W x 13"Th, 21"L x 15"W x 8"Th.