12-INCH PROADAPT HYBRID KING MATTRESS: The TEMPUR-ProAdapt Hybrid is expertly engineered with the most pressure-relieving material we've ever created. It adapts and conforms to your body’s unique needs. Every point of contact is more fully supported. HYBRID TECHNOLOGY: 1000+ premium spring coils designed in-house to work with our proprietary material – made for easier movement. ONE-OF-A-KIND COOLING TECHNOLOGY: The SmartClimate Dual Cover System is next-generation technology. Featuring a zip-off, cool-to-touch outer layer and super-stretch inner panel for convenience and comfort.