ABOUT THE COLLECTION: The TEMPUR-Adapt® 2.0 collection features the latest advancements in the one-of-a-kind, infinitely adaptable, and body-conforming TEMPUR-Material™. It's designed for exceptional support and pressure relief to reduce aches and pains, so you get your best night's sleep—every night. View all the mattresses in the Tempur-Adapt 2.0 collection QUILTING LAYER: The SmartClimate® Cover is an exclusive Tempur-Pedic® technology, this innovative material is designed to pull heat away from your body to help you sleep cool, all night long. Materials: SmartClimate® Cover COMFORT LAYER: TEMPUR-Material™ is ultra-conforming—responding to your body's weight, shape, and temperature. Materials: TEMPUR-Material™ Comfort Layer - 4cm SUPPORT DETAILS: TEMPUR-Material™ provides advanced all-night adaptability for truly personalized comfort and support. Over 1,000« premium spring coils provide additional edge support and easier movement. Materials: TEMPUR-Material™ Support Layer - 4cm and coils BOX SPRING:Engineered to support your Tempur-Pedic® mattress and upholstered in matching grey fabric with a perfectly solid, flat surface, this box spring is offered at a height that's right for you. 9" High matches a traditional box-spring height. 5" Low fits through more narrow stairways. 2" Ultra-low is perfect for platform-style bed frames. Materials:Nail-free, Medium density fiber boards