These simple well made sketchbooks are made from 100gsm acid free paper with a recycled flecked thick cardboard cover and bound across the spine with a linen fabric in red, black, blue or yellow. Either colour code your sketch or notebooks or just pick your favourite colour. This set of 4 contains one of each. The sketchbooks contain 144 pages and are A4 size (21cm x 29.7cm) We also have these sketchbooks in A5 size (14.8cm x 21cm) If you appreciate the minimalist nature of the material that covers the book you can leave it as it is, alternatively if you are someone with a collection of stickers or the inability not to doodle on a blank surface you can let rip with decorating it.