Plein air art board pads are the perfect companion for any artist. These pads enable the artist to express their creativity indoors and outdoors. These pads contain 10 Rigid art Boards that are glued on one side. Plein air art board illustration pads are constructed of ultra smooth Boards that provides a brilliant foundation for ink, marker, felt-tip pen, and pencils. This paper stands up to erasing and scraping. Plein air art board illustration pads are extra white for superior contrast. This pad is 9 x 12 inch of acid free Boards.