The Naturepedic Ultra Breathable 2-Stage Baby Crib Mattress combines every safety feature you could ever want in one crib mattress. An excellent choice for parents seeking to eliminate potentially harmful chemicals and allergens. Made from non-toxic materials, it will provide a more natural, healthier, and comfortable sleep environment. Features include a luxurious cotton cover, cotton fill, seamless waterproof edges, 2-stage dual firmness, edge support, and a patented easy-to-clean waterproof surface. The breathable layer is removable and washable. This mattress is lightweight for easy sheet changes.