When it comes to your comfort, discover this 12-inch king mattress. Its thick layer of memory foam contours to your body, delivering amazing support, pressure relief and comfort. The memory foam layer is supported by a super thick layer of firm support foam. This helps reduce motion transfer so you and your partner can enjoy an undisturbed sleep. This mattress arrives in a box for easy setup. Foundation/box spring available, sold separately. Dimensions: 76”W x 80”D x 12”H Assembly Instructions: