This cardstock is a shiny mirror cardstock. It is not a perfect mirror but you can definitely see your reflection in it. The paper is thick enough to be made into greeting cards if you want. It can also be used in many crafts applications including keepsake items (Acid and Lignin free). The flip side is white. Sheet size is 8 1/2 x 11, 10 sheets per package. 6 colors available.