The book composition is the notebook commonly used by writers and students in the USA. It is known to be strong and durable. Stitched booklet with black canvas on the back for a better hold. Perfect flat opening for more comfortable use of the notebook. Superfine 80 g white vellum paper for unparalleled writing quality. PEFC Certified for reasonable forest management Adjustment: small tiles 5x5 mm in grey colour. Non-detachable sheets