Because a good night's sleep is essential for growing bodies, the Serta Widefield mattress was designed to deliver just that. This super pillowtop mattress utilizes Serta's 532 Continuous Support innerspring coils, providing superior stability and durability to give your child the support needed for quality sleep. A supportive Total Edge foam encasement extends the usable sleep surface to the mattress edge, keeping kids safely on the mattress even when they move during the night. Layers of advanced Comfort XD and Cool Twist Gel Memory Foam work together to prevent tossing and turning by reducing pressure points while increasing airflow to move heat away from the body. A top layer of PillowSoft foam with Pillo-Fill creates an ultra-plush feel. 10 Year Non-Prorated Warranty.