When the first Tempur-Pedic mattress was introduced in Sweden, their proprietary TEMPUR® material changed the way the world sleeps. TEMPUR® material-originally based on NASA research-is infinitely adaptable, and responds to body temperature, weight and unique shape to result in personalized support and alignment for undisturbed sleep. Tempur-Pedic mattresses come with a number of customization options to help you choose the right mattress for your needs, whether soft or firm, low or high. Tempur-Pedic is known for producing one of the best memory foam mattresses available on the market.