TEMPUR® material is not like ordinary memory foam. Every Tempur-Pedic mattress is made with the same pressure-relieving material that started it all, originally developed by NASA. The TEMPUR-Adapt® Medium Hybrid mattress offers the same features as the Adapt®-Medium but pairs with 1000+ premium spring coils designed by Tempur-PEdic engineers to work exclusively with TEMPUR® Material. This is Tempur-Pedic's most affordable Hybrid mattress. You will have the best of both worlds; conforming surface adjusting to your body plus the buoyancy the premium spring unit provides. Sleep on a cool to the touch cover atop the Comfort Layer of TEMPUR-ES®. This provides an initial slightly softer surface material supported by the firmer Original TEMPUR® Support Layer. This mattress provides a dense, conforming feel that will give you years of support you can count on!