Whether you like to sketch on the go or prefer longer, more technical studies, our new hard-bound Sketchbook comes in A4, A5, and A6. Equipped with 240 gsm stone paper, this A4 Sketchbook is a jack-of-all-trades, allowing you to hone your skills in both wet and dry mediums. Made with our unique stone paper material, our pages are absolutely waterproof, guaranteeing zero-bleed through, even with wet mediums like watercolour.