The Leuchtturm1917 Weekly Planner & Notebook 2027 in the B5 Composition hardcover is the format I point people toward when A5 feels a touch tight but A4+ is too much to carry. At 178 x 254mm it sits in the sweet spot - a full week on the left, a ruled notebook page on the right. The paper is the thing. Eighty gsm, ink-proof, it handles fountain pen ink cleanly and holds a pencil mark without smudging. All the familiar Leuchtturm details are here: three-year overview, moon phases, project planner, expandable pocket, two ribbon markers, elastic closure and thread binding that opens flat. A generous, considered planner for people who like to write a little more than a small page allows. Size: Composition (B5), 178 x 254 mm Hardcover, 80 g/m2 ink-proof paper January 2027 - December 2027, week-to-view with facing ruled notebook page 3-year overview, moon phases, public holidays in 58 countries, project planner Expandable gusseted pocket, 8 perforated detachable sheets Two ribbon page markers, elastic closure, thread-bound to lie flat Sticker set for labelling and archiving