The Oxford Twin-Ring Notebooks A5 come in two designs. It is wire bound for strength and durability and does not deform easily with use. The cover wears well and is robust and splash-proof, protecting the high quality pages from damage. The Oxford Twin-Ring Notebook A5 is a majestic, substantial hard cover desk-top book.It is 148 * 210mm and has ink proof,80gsm fountain pen friendly paper.and other robust materials that make it great for high volume use and work. We're very lucky to offer such a perfect piece of stationery! SPECIFICATIONS SIZE : 148 * 210mm