Foundations Infapure 4” Foam Full-Size Crib Mattress (6424012) offers a dense foam that provides the ultimate in support and comfort. Infapure mattresses also feature a nylon reinforced, ultra-durable vinyl cover that is water resistant and easy to clean. The edges are bound and stitched to prevent moisture from passing through. Antimicrobial vinyl provides superior hygiene. Mattress is hypoallergenic and phthalate free. Infapure mattresses meets or exceeds all federal flammability standards without added chemical flame retardants, such as tris, to provide clean, quality air for baby. Item 6424012 is a 4” thick, full-size, foam mattress which fits Foundations 10 series, 11 series, 13 series, and 18 series full-size cribs. Naturally Safe, lab tested, no harmful chemicals. Individual mattress measures 52” L X 28” W X 4” D. Individual shipping weight per mattress is 9 lbs.