Serenia Sleep's eight inch memory foam RV mattress is designed specifically to fit RV specifications. If your camper is ready for a replacement mattress, this memory foam mattress is a perfect choice for a good night's sleep. The top layer of two inch premium memory foam cradles you and relieves pressure at your hips and shoulders compd to traditional mattresses so you can enjoy a good nights' sleep and the adventures of the open road. Your mattress is compressed-packed for easy shipping and arrives in a small box. Simply open it up, allowing a few hours for the foam to expand and it will be ready to be slept on.