Upgrade your sleeper sofa mattress to the Dynasty Mattress Gel Memory Foam Sofa Bed Mattress. This 4.5-inch sofa mattress comes in twin, full, and queen sizes and has 2 layers of gel memory foam. The top layer of memory foam provides plush comfort and pressure relief, and the bottom layer of dense foam provides orthopedic support and ensures the longevity of the sofa mattress. Memory foam reacts to body heat and conforms to the body's curves, aligning the spine during sleep. This mattress can easily fold up inside your sofa, providing a more comfortable alternative when compared to traditional pull-out beds. Use it as a mattress for your bunk bed, RV, camper, trailer, dorm room, or hide-a-bed. You can even use it as a mattress topper. Note that your purchase will not include a sofa. This plush sofa bed sleeper mattress is ideal for relieving back pain, making it an excellent replacement for old and outdated sofa mattress designs. Most other sofa mattresses are designed with uncomfortable springs or are so thin that the user can feel the metal bars of the bed frame through it. We ship this mattress in vacuum-sealed packaging, compressed and wrapped in a dual layer of heavy-duty plastic for optimal protection and shipped in a small box. This premium replacement sofa mattress is an unprecedented 4.5" thick and has a 2-inch gel plush memory foam layer and a 2.5-inch base foam support designed with technology that breathes, keeping your guests cool and comfortable at night. The expertly designed memory foam conforms to the body, aligning the neck and spine, which creates an optimal sleeping environment for the user. In addition, the comfort rating of this mattress is medium firm, making it perfect for most preferences. Try Dynasty Mattress sleep products for an unmatched level of quality and comfort all at an affordable price.