Martex® Millennium Millennium 200 Full Flat Sheet (81 X 104) Fresh White.Experience the cool, crisp luxury of a fine percale sheeting made from an intimate 60/40 blend of soft cotton and durable spun polyester. Martex® Millennium sheets are built to last and appeal to a broad range of properties. Available in Fresh White, the Millennium sheet brings uncompromised quality and durability at an economical price. Martex® Millennium is approved by the General Services Administration (GSA) for sale to the US Government. Hem thread color coded. Case Price. Case Pack 2 Dozen.