Content: 100% Polyvinyl Chloride, Poly/Cotton BackingWidth: 47.5"Usage: Chalkcloth is portable, lightweight and erasable; you can sponge it clean with water to renew. It is important to cure your new chalkcloth before you use it the first time. This is done by laying a piece of chalk on its side on the surface of the chalkcloth and rubbing it all over - side to side and top to bottom. Then repeat this process again. Your chalkcloth is now ready for use.Maximum Continuous Length: Approximately 18 yards, when ordering more than 18 yards please note it may come in more than one piece.