· Printing and writing on Astrobrights Astro White Cardstock is ideal for in home, in office and at school applications. This cardstock is acid-free to prevent yellowing and disintegrating. Astrobrights cardstock features a smooth finish to bring out the true look of your designs.· 65-lb card stock can be used for a variety of projects.· Smooth finish offers a great look for text and images.· Acid-free paper won't fade over time.· For use with inkjet and laser printers, copiers, fax machines and postage machines.