These postcards are printed full color on one side and black and white on the back, perfect for mailings. This is just about the biggest postcard you can get and still get the discounted postcard postage from the post office. These full color postcards are printed on a premium 14pt card stock with aqueous coating. Our postcards are produced with the latest equipment and process so you can be assured that your postcards will look great and last a very long time.