Rest assured your baby will sleep comfortably on this well supported Superior Slumber Spring Coil Mattress by Dream On Me. This mattress is constructed with quality materials and workmanship. This lightweight mattress offers 112 durable, interwoven, heat tempered, steel coils providing supreme comfort and support. A protective polyurethane foam wrap on each side delivers a plush sleeping surface. Features include a hypo-allergenic, foam Insulating layer and lock stitched waterproof binding for lasting durability and a layer of fire blocker, a blend of fibers that help isolate the impact of a fire and limit its spread. The triple laminated waterproof cover is stain-resistant to help protect against liquids leaking inside. Clean with mild soap and water. Passes all flammability tests (16 CFR 1632 /1633) and also pass phthalate, lead and toxicity tests.