Canson Plein Air Illustration Smooth Art Board Pad for Ink, Markers and Pencils, 9 x 12 Inch, Set of 10 Boards These pads enable the artist to express their creativity indoors and outdoors Contain 10 Rigid art boards that are glued on one side Constructed of ultra smooth boards that provides a brilliant foundation for ink, marker, felt-tip pen, and pencils Stands up to erasing and scraping 9 x 12 of acid free boards