The 8" Memory Foam mattress bundle is the best seller in 5 Little Monkey's specialty bedding line, designed for the growing needs of children and teenagers. The 5 Little Monkey Sleep system has created the ideal sleeping environment for your child. Our system includes a triple-layered mattress made using CertiPUR-US® certified memory foam, a waterproof mattress protector, and a custom-fill pillow. The mattress has cutting-edge temperature-regulating technology to keep little bodies comfortable and cozy. The removable and washable mattress cover, made with cotton, ensures years of good sleep hygiene. For added protection and comfort, our waterproof mattress protector is made with soft jersey knit and comes alongside a custom-filled pillow, which is anatomically correct for smaller bodies. This mattress bundle and sleep system contains everything that you could want and need to give your little one the best night's sleep...every night.