3" compact crib mattress features: bound and stitched edges prevents moisture from passing through, made from virgin foam with no chemically added flame retardants, nylon reinforced, ultra durable vinyl is water resistant and easy-to-clean, dense foam provides the ultimate in support and comfort, antimicrobial vinyl provides superior hygiene, and hypoallergenic and phthalate free. Meets or exceeds all federal flammability standards without added chemical flame retardants, such as tris, to provide clean, quality air for baby. Measures 38"L x 24"W".