Dreamaway by Sleep Innovations 10-inch Memory Foam Mattress, King Top layer: 2 inches of open-cell memory foam provides cradling comfort Middle layer: 3 inches of PureBalance foam for even support and optimal comfort Bottom layer: 5 inches of support foam for stability and durability Distributes body weight to relieve painful pressure points that cause tossing and turning Holds its shape, with no flipping or rotating required