Guarantees 100% ventilation through high-tech breathable mesh and open air sides Offers a firm side for newborns (0-1 year) and a softer side for toddlers (1-3 years) Bed bug proof! Uses no foam or stuffing, eliminating the need for possible toxic or harmful carcinogenic flame-retardants Infant and Toddler sleep surfaces can be easily removed and machine washed in the included Laundry Bag Splash Mat is included and can be used between the mattress and crib support Includes Mattress frame, Infant Sleep Surface, Toddler Sleep Surface; Splash Mat, laundry bag and storage tote