Plein Air Artboard Pads are the perfect companion to any artist, enabling you to express your creativity, indoors and outdoors. Canson takes traditional techniques and offers a new & innovative delivery system that is portable, rigid, and convenient. These pads contain 10 rigid Artboards that are laminated to Canson Montval cold press watercolor paper making it a great surface that is usable with most water media such as watercolor, acrylic washes, gouache & ink. The pads are glued on one side and have a fold over heavyweight cover. Acid-free.