There are a lot of companies out there touting their memory foam mattress. But how many of them are using the top-quality visco-elastic foam developed for NASA? Christeli's Memory-Luxe™ visco-elastic foam is dense (5.3 pounds and 8 pounds) and designed to last. It is responsive to your body's temperature and will relieve pressure points night after night to align your spine and reduce pain. Best of all, Christeli has over an 80-year history and builds its mattresses right here in America. Selling directly from the factory is how Christeli passes on such enormous savings to its customers – its memory foam mattress is half the price of Tempurpedic.