Heavyweight paper features a super-smooth design with a brightness level of 100 to provide high-quality, full-color print results. 28 lb., uncoated material offers a premium look and feel for all your important documents. ColorLok technology delivers bolder blacks, vivid colors and faster drying to create professional-style prints that are sure to impress. Acid-free paper prevents dulling over time for sharp, detailed images and fine text that last. Optimized for use in all color laser printers and color copiers, this letter-size paper is perfect for color presentations, brochures, color copies, proposals, direct mail, reports and more.