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. Serta Dunleer Low Profile Twin Mattress Set10 Year Non Pro-rated Warranty