Mont Marte hard cover sketch books are a fantastic, durable artist essential. The cover is water resistant with a robust and sturdy heavy board that is traditionally bound. The paper is size A4, 110gsm cartridge paper that is acid free with a medium tooth, which can facilitate graphite and charcoal techniques beautifully. These sketch books will be great for a variety of uses for your artistic endeavours like scrap-booking, journaling, mixed media and as a visual art diary etc.