Enjoy our NeutraSleep Collection from Neven®. The total comfort and cooling design of our NeutraSleep Collection is exceptional. The Sensory Foam Gel, UltraFlex foam springs and airflow channels provide a unique combination for heat dissipation, pressure point relief and resilience for natural sleep movement, keeping you comfortable all night. You have to experience this revolutionary mattress! Highlights: 11-inch thick mattress Firmness Rating: Firm Cool Touch Cover Two layers of our exclusive Sensory Foam Gel. Our exclusive gel formulation allows for faster heat dissipation, exceptional pressure point relief and fast response time, allowing you to effortlessly change positions UltraFlex foam springs layer - move independently to provide individualized comfort, maximum support and durability NeutraBase layer - provides stability Integrated vertical and horizontal airflow channels. Horizontal and vertical air channels create a temperature neutral environment, maximizes airflow at each and every layer and allows body heat to escape, promotion optimal temperature. Designed and constructed in the USA 10-Year Limited Manufacturer Warranty Fiberglass Free Spot clean only Carried in Twin XL, Queen, King, Cal King Dimensions: Twin XL: 38 inches wide x 75 inches long x 11 inches thick Queen: 60 inches wide x 80 inches long x 11 inches thick King: 76 inches wide x 80 inches long x 11 inches thick Cal King: 76 inches wide x 80 inches long x 11 inches thick Mattress Tips: Conveniently arrives tightly packed in portable box. Remove from packaging within 72 hours to maximize expansion. You can sleep on it the same night it is unwrapped, however, allow 48 hours to fully return to its original shape. Due to machine-cutting manufacturing processes, there may be slight variances in the dimensions of this product. Due to the nature of memory foam, the firmness level of similar products may produce different firmness results. Once opened this product is non-returnable.