The Mont Marte Signature Sketch Pads come with 25 sheets of smooth-textured, 150gsm, acid-free paper. This paper is an incredibly adaptable medium that works well with a wide variety of craft projects and drawing mediums. The paper in this sketch pad is extremely finely toothed and bright white. Because the sheets are tape bound, removing them is simple and quick. Additionally, a backing board that is 2 mm (0.8 in) thick supports the sheets. The inside cover of Mont Marte Sketch Pads provides useful drawing tips, making them an ideal tool for beginning artists. ASPECTS Without acid. 25 sheets of white. 150 grams mass. backing board, 2 mm (0.8 in). Inside the cover are drawing tips. In stock in A3, A4, and A5.