Rest easy knowing your child is getting the quality sleep his or her growing body needs with the Sealy Z-501. This firm, supportive mattress features a soft, stretch knit cover treated with AllergenProtect to promote a fresh sleep surface free of dust mite dander and other allergens. A layer of IsoMotion advanced gel infused memory foam at the sleep surface conforms to your child's unique shape, providing cushioned comfort with the added benefit of pressure point relief. The Sealy Response Coil System offer deep down, restorative support that flexes to adapt to your child's movement. And finally, the SolidEdge HD System strengthens the mattress perimeter, creating a larger usable sleep surface by reinforcing each edge. 10 Year Non-prorated Warranty.