Dream On Me, Holly 3” Fiber Portable Crib Mattress softly cradles your baby for comfort the inner core is constructed with extra firm Eco-fiber for an inviting, comfortable, environment for your sleeping baby. This mattress is proudly constructed of quality materials and workmanship in the USA. Lead and phthalate tested this mattress passes the Federal Standard Flammability Standard 16 CFR 1633. Designed to fit a standard 24” x 38” Portable/mini Crib. As parents are looking for more space saving furniture mini and portable cribs are ideal for apartment/ smaller home and Dream On Me Holly mattress fits most mini and portable cribs (not designed for standard cribs or pack 'n plays).Doesn’t include removable cover