These heavy weight paper sketch books are suitable for pencil, pen and ink and light water colour washes. Made using 170 gsm acid free paper for longevity, each sheet is perforated along the edge to alow for easy removal.This range of case bound sketch books is available in two styles; one is a case-bound with a classic leather effect black cover and the second is a wire-o style hard backed sketch book. Both styles are available in a variety of different sizes.