Your baby will curl-up in comfort on the Twinkle Spring Coil Mattress by Dream On Me. Constructed with quality materials and workmanship. This lightweight mattress offers 88 durable, interwoven, heat tempered, steel coils providing supreme comfort to support his or her growing bones. A protective polyurethane foam wrap on each side delivers a plush sleeping surface. Features include a 3-hypoallergenic layers, foam Insulating layer and lock-stitched waterproof binding for lasting durability. The phthalate and lead-free, triple-laminated waterproof cover is stain-resistant to help protect against liquids leaking inside. Wipes clean with mild soap and water. This mattress meets the 16 CFR 1632 /1633 Federal Flammability Standards.