This specially coated black poster board is designed for use with chalk and chalk markers. Durable, 18 pt. board has a dark black coating that provides great contrast with white and colored chalks. Board wipes clean with a damp cloth or a felt eraser. Easy to customize for signs, posters and photography props. Details:Black 22" x 28"Includes 25 sheetsSpecially coated black poster board for use with chalk or chalk markersDurable 18 pt. board Dark black coating provides great contrast Wipes clean with damp cloth or felt eraser Recyclable