For cozy comfort with a firmer feel, the Serta Riverford mattress is an excellent choice for your growing child. This mattress features innovative Cool Twist foam infused with cooling gel that works to dissipate heat while cradling their body. Inside, a continuous row of innerspring coils runs from end to end, reducing motion transfer while providing full body support. PillowSoft Aire foam brings ultrasoft cushioning in a rippled design that promotes airflow and reduces heat build-up. The addition of support foam combines gentle cushioning with an extra firm feel. Featuring FireBlocker Fiber, this mattress utilizes a blend of natural and synthetic fibers to isolate the impact of a fire and limit its spread, bringing peace of mind to your sleep. 10 Year Non Pro-rated Warranty