The 25-pack of black Slit-Cut Photo Folders from National Photo Folders has two pre-cut openings in each corner of the folder, which accommodates one 4 x 6" or one 5 x 7" print. A photograph within the folder makes for a nice gift to be displayed, and some event photographers like to use them as a keep sake for clients at social gatherings. The photo folders are made from black recycled paper.