The Lulu Ion is the most advanced mattress of its kind. Every Lulu Mattress is engineered with advanced fabrics Powered by Miracle Yarn Technology (ceramic coated fibers). Using your body as it's own source of power, Lulu Ion's Miracle Yarn reflects F.i.r. (Far Infrared Rays) naturally emitted by the body back onto the body where they stimulate local blood circulation and enhances quicker recovery time. All Lulu Ion Mattresses are proudly made in the Usa and are Fda determined.