Dream On Me, Iris 3" Spring Coil Portable And Mini Crib Mattress is designed to provide supreme comfort and support as a full-size crib mattress. This portable/mini crib mattress features interwoven steel coils that are wrapped in polyurethane fiber and protected with a waterproof cover with a Lock Stitch cover. 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 homes and Dream On Me Iris mattress fits most mini and portable cribs (not designed for standard cribs or pack 'n plays). Doesn’t include removable cover