The 4" CertiPUR-US? Single Foam Futon Twin Mattress is the ultimate solution for futons and smaller spaces. With a single layer of premium-quality polyurethane foam, this mattress contours to the body, aligning your neck and spine and allowing you to relax and enjoy a good night's sleep. Just pair it with your favorite frame and you have a soft and cozy bed! Can also be used directly on the floor. Made with eco-friendly fibers that add extra comfort on both sides. Its super durable polyester fabric is perfectly suitable for teenager's rooms, dorm rooms, guest rooms, etc. CertiPUR-US? certified for the safety and health of your family. 4" x 75" x 39"