When you need to stand out with bold, high-impact color in a durable cover weight, Astrobrights Colored Card Stock is a brilliant choice. It's thick enough to stand up to frequent handling and the rigors of postal machines, yet it's smooth enough to work with inkjet and laser printers. Since this unique colored paper is highly saturated, it offers a bright background for your creativity to come to life. Easily create dazzling postcards, booklet covers, presentation bindings and paper crafts. Brighter colors. Brighter ideas. Can't decide on just one high-impact color? With the Astrobrights "Classic" Assortment, you don't have to. In each pack, you'll get four, single, solid colors. Get ready for your most creative ideas to really take off when you pair it with Astrobrights Color Paper for a unified and consistent look to your project, or pair it with other Astrobrights Colors or Neenah Bright White Card Stock for a bold, brilliant impact. According to studies conducted by the American Paper Institute and the Color Marketing Group, color increases written information retention by 18 percent, improves readership by as much as 40 percent; and for direct mail, color increases response rates by up to 20 percent.