Apart from tucking your child into a cloud each night, the Serta Dunleer mattress set provides the most plush, pillow-soft environment you could dream of. Utilizing Serta's 520 Continuous Support innerspring coil design, delivering a stable, durable surface that absorbs your child's every motion, this plush mattress is not only comfortable but it's supportive, too. Layers of body-contouring PillowSoft foam are enhanced by Cool Twist Gel Memory Foam for pressure point relief with increased airflow that helps to dissipate heat. 10 Year Non Pro-rated Warranty