Size: 9 by 12 Inch. Plain 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. Plain air art board canvas pads are primed and ready for oil paint, oil sticks, oil pastels, or acrylic paints without the need for priming or preparation. The natural, canvas-like texture is treated with a high-performance barrier to evenly absorb oil, bonding agents, and water. This pad is 9 x 12 inch of acid free Boards.