Anyone can easily practice math problems, letters, writing skills and more by inserting a worksheet in the dry erase pocket. Allows you to reuse worksheet pages to eliminate paper waste and save on paper, money and time. Heavyweight pocket can be reused for a long time. Convenient eyelet allows the pocket to hang. Low-odor dry erase marker (not included) wipes off with soft, dry cloth or tissue. Horizontal Orientation. Width: 9"; Height: 12"; Color(s): Black.