I couldn't find any clear size comparisons between Moleskine/Leuchtturm1917 sizes so I made one! Two Moleskines full, two Leuchtturms taking their place. Mujis for scale. : r/notebooks
Paper Sizes Explained - Best Pen Reviews & Buying Guide For You
One cover to carry them all - Bleistift
Guide to Traveler's Notebook for Beginners -A Wandering Scribbler
TRAVELER'S COMPANY TRAVELER'S notebook Starter Kit - Passport Size - Brown Leather | JetPens