The Inart A5 180g Sketchbook with 40 Sheets (1550399050) trades the number of sheets for a higher grammage in the A5 format, with 40 sheets of 180g paper that support more intense dry techniques, such as thick charcoal, dry pastel, or multiple layers of graphite without the paper marking the other side. The more robust weight of the paper prevents the sketchbook from becoming wavy or transparent during heavier work sessions, keeping each sheet independent and clean. It is also 100% cellulose and acid-free. The compact A5 format makes it easier to carry than the equivalent A4 version, without sacrificing the paper's resistance to heavier drawing techniques. It is ideal for those who work with charcoal, dry pastel, or thick graphite and prefer a small sketchbook to take outside the studio.