Let your imagination take off with Astrobrights colored cardstock, in Primary 5-Color Assortment. Creative geniuses and novices alike can create flyers, invitations, presentation covers, scrapbooking, school projects and DIY paper crafting. Display and store projects with confidence, since each sheet is lignin and acid-free. Plus, this cardstock works well with copiers, inkjet, and laser printers. Astrobrights cardstock is also compatible with electronic cutting machines so you can create intricate letters, shapes and other designs. Save money on pricey full-color ink - just add black ink! Brighter Colors. Brighter Ideas.