Get a better night's sleep on this A C Pacific Herbacoal 12 in. Memory Foam Mattress. The layers on this 12-inch thick mattress include 2 inches of green tea-infused memory foam, 2 inches of charcoal-infused memory foam, and 7.75 inches of high-density support foam. This mattress molds to the shape of your body, easing pressure points that can cause discomfort. It never needs turning and is hypo-allergenic, organic, and resistant to dust mites. Choose from available size options.