Premium paper which is thickened high-quality paper for sketching. The hardcovers also are thickened and could be used as backing boards if going out for landscape sketching. The thickened hardcovers with side wire-bound protect every sheet of your precious sketching well in different bags.
Sheets of thickened paper and covers for each sketchbook is not too heavy or big, which is really convenient to take everywhere to schools, outdoor activities, camping, or staying with friends. And also suitable for younger who love sketching and painting.