Wausau Paper Astrobrights Colored Paper in Happy Assorted colors, featuring 500 sheets per ream. This premium 24 lb. paper is 20 percent thicker than standard sheets, making it ideal for a variety of everyday uses such as notices, flyers, and announcements. Each sheet is acid-free and lignin-free, ensuring durability and longevity. Compatible with copiers, offset printers, laser printers, and inkjet printers.