Supersoft organic cotton fibers create a pure, natural sleep space for babies and toddlers. The plush cover features water-resistant backing and the mattress' pocketed coil system adjusts to the weight and contour of your child's body, providing comfort, support and motion separation for an undisturbed night's sleep. Mattress: 52" long x 27.5" deep x 6" high Mattress is constructed of pure organic cotton ticking, organic soy and pure organic wool lining. All Natural soyside provides the firm sleep surface needed for newborns and babies. Cover is backed with a water resistant medical grade plastic barrier. Oekotex certified. Contains no chemicals and is non-toxic.