The Dream On Me Patented Ultrapedic Convoluted mattress firmly supports your baby for a restful sleep. Firm for your newborn on one side and as your baby grows, reverse the mattress, which provides a softer sleeping surface for your baby. Constructed of Non allergenic, waterproof, washable cover and vented for a fresh sleeping environment. The mattress is free of phthalates and lead. Rest easy knowing this mattress is constructed with quality materials and workmanship in the USA. Easily wipes clean with warm water and a mild soap. The Dream On Me Ultrapedic mattress meets all federal flammability standards, with a 15 year warranty. The mattress fits cribs and toddler beds.