The Sealy Baby Ultra Rest Crib Mattress features 204 heavy gauge interlocking steel coils heat tempered for strength and durability. Its all-around border rods keep the sides corners and edges firm. Steel vertical support bars distribute the baby`s w eight evenly over the entire surface of the mattress. This piece comes equipped with a non-allergenic protective wrap that provides long-lasting durability and support. A second non-allergenic layer supplies a plush gentle sleeping surface for your b aby. Each mattress includes a tear-resistant reinforced laminate cover with vinyl binding to protect against stains odors and mildew. The entire mattress wipes clean with a damp cloth. This product is made in the U.S.A. The Sealy Baby Ultra Rest Cri b Mattress is second to none when it comes to durable and safe comfort.About SealyFrom the first cotton-filled mattresses made by Daniel Haynes in 1881 to the Sealy Posturepedic mattresses of today the Sealy name has been synonymous with sleep for mo re than 125 years. Named for the small town in Texas where the company had its beginnings Sealy Corporation through its subsidiaries is the largest bedding manufacturer in North America. It produces a diversified line of mattress and foundation produ cts including the Sealy Sealy Posturepedic and Sealy Posturepedic Luxury Collection mattresses as well as important component parts used inside mattresses.America`s best-selling mattress company Sealy currently operates 31 plants which manufacture be dding in 20 states three Canadian provinces Mexico Puerto Rico Brazil Argentina France and Italy. Staff at their research and development center in High Point N.C. test new materials and machinery train personnel compare the quality of Sealy`s produc ts with those of its competitors and develop new products and processes. Sealy headquarters is located in Trinity N.C