Canson Sketch Pad 1557 160gsm 20 Sheets A3Canson Sketch Pad (20 Sheets A3) Giving the Canson Sketch Pad 1557, which uses 160gsm of fine grain, natural white cartridge paper. 20 A3 papers are easily linked together in one pad. It is ideal for sketching and drawing with pastel, pencil, ink, charcoal, and makes cleaning twice without drying. It also contains no acid, so your artwork will be maintained for a long time. Canson Sketch Pad 1557 Natural white, fine grain 160gsm paper Glued pad with