The Twilight crib mattress is crafted for simple, safe sleep. With a triple-laminated waterproof cover and four inches of flat and firm foam, the hypoallergenic Twilight makes late night changes even easier in its lighter weight form. Like all DaVinci mattresses, the universal fit of Twilight is designed to fit safely and snugly in any of our MDB Family Cribs. Free of adhesives, lead, TRIS, phthalates, and toxic flame retardants for eco-friendly peace of mind. Made in the USA.