This is an original acrylic on 5 X 7 inch 140 lb watercolor paper.
PS: I do most of these works on 140 lb watercolor paper. Its tough, acid free and will last like forever. Besides those qualities it is easier to pack and to ship. Something novice painters should keep in mind, watercolor paper, even at 90 lbs will hold acrylics well. There is no need for canvas, masonite board or even canvas panels while you are painting practice pieces.