iComfort CF4000 Firm

Made from super cool high-performance fibers for an instant cool-to-the-touch sensation.

This layer of extra-cool Carbon Fiber memory foam is engineered to work hard at absorbing excess heat from your body, then channel it away, all while you sleep comfortably.

Carbon fibers embedded in the foam channel heat away from your body and provide exceptional strength for back and neck support.

Only available in select iComfort models, this highly-dense memory foam has both cushioning and conforming qualities for a firm, yet comfortable deep-down support.

This exclusive air-cushion technology moves with your body and smartly contours around it to help alleviate aches and pains caused by pressure points.

Our new and improved Serta Foam Core provides durable support for any sleep position. With consistent support from edge to edge, you’ll be comfortably supported all night long.