Canson Plein Air Mix Media Art Board Pad for Watercolor, Acrylic, Pens 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 Heavyweight paper ideal for many different types of wet and dry media with excellent erasability 9 x 12 of acid free boards