Dream On Me 3 inch Portable Crib Mattress softly cradles your baby with comfort creating a cloudlike environment for your baby to sleep peacefully. Rest easy knowing this mattress is phthalate and lead free and constructed with quality materials and workmanship in the USA. A non-allergenic, anti-bacterial waterproof cover aids in the prevention of mold, mildew and odor. Easily wipes clean with warm water and mild soap. Complies with Federal Standard Flammability Standard 16 CFR 1633. This is a portable crib mattress and fits portable cribs only measuring 38"L x 24"W x 3"H. Does not fit standard size cribs.