King beds need reliable support for couples and guests who expect the best. Our King Medium support mattress (10 inch) provides just the right blend of firm structure and gentle cushioning, made from gel memory foam right here in the USA and certified for both cooling and health. You get an extended life, consistent sleep, and a design that resists flattening - even in master beds used every night.Moving is a breeze thanks to the boxed delivery, while the Fiberglass-Free construction brings relief to allergy and health-conscious shoppers. Each surface, contour, and layer is made for comfort and peace of mind.A gel memory foam King mattress 10 inches thick means better sleep, fewer replacements, and true comfort for years to come.