Chalkcloth is portable, lightweight and erasable.  Renew with a damp cloth.  Great for teaching, childplay, drawing, signs, messages, construction, and more.  It is very IMPORTANT to cure your chalkcloth before use.  This is done by laying a piece of chalk on it's side on the surface of the chalkcloth and rubbing it all over - side to side and up and down.  Repeat.  Your chalkcloth is now ready for use.  It is approximately 48" wide.

From Moda