Slumber Solutions Respond 12" NRGel Memory Foam Mattress, Mattress-In-A-Box, Cal King

Features: Unique three layer construction – 2.5" NRGel Memory Foam, 4" of Comfort Foam and 5.5" of Base Foam Can be used with any conventional box spring or platform foundation, including an adjustable base Available in Plush, Medium and Firm comfort options Manufactured from CertiPur-US certified memory foam Fiberglass Free Proudly manufactured in the USA Spot clean only Dimensions: Twin: 38 inches wide x 75 inches long x 12 inches thick Twin XL: 38 inches wide x 80 inches long x 12 inches thick Full: 54 inches wide x 75 inches long x 12 inches thick Queen: 60 inches wide x 80 inches long x 12 inches thick King: 76 inches wide x 80 inches long x 12 inches thick California King: 72 inches wide x 84 inches long x 12 inches thick Memory Foam 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.