The durable 50-coil Crescent mini mattress is crafted with a tempered steel spring unit for added firmness that ensures a safe sleep. With a triple-laminated waterproof cover, and 9-gauge border wire for stability, the non-toxic Crescent is perfect for sweet dreams. Like all DaVinci mattresses, the universal fit of Crescent is designed to fit safely and snugly in any of our MDB Family Mini Cribs. Free of adhesives, lead, TRIS, phthalates, and toxic flame retardants for peace of mind. Made in the USA.