Both a mattress and a sofa, this LUCID 4 Inch Folding Mattress and Sofa can be used as a comfortable medium-firm mattress, or it can be folded to create a sofa- floor chair. A half-inch layer of gel-infused memory foam on top of a 3.5-inch layer of high-density base foam creates a soft yet supportive surface that makes sleeping on the ground almost enjoyable. During the day, the mattress can be folded to create a sofa- floor chair; great in a playroom. This unique 4-inch convertible mattress is great for small spaces, and it is easy to take with you for camping, RV trailers, and other travel needs. The portable design allows you to bring the comforts of memory foam wherever you go. This super lightweight mattress is fitted with handles for easy transport and it folds for convenient storage. Made of a durable indoor/outdoor material, the zippered cover is removable and machine washable for easy care. Safe for you and the environment, this product is CertiPUR-US tested and certified for safe materials, environmental guidelines, and performance.