Filofax is a company based in the UK that produces a range of well-known personal organiser wallets. The organisers are traditionally leather bound and have a six-ring loose-leaf binder system. The design originated at Lefax, a United States company based in Philadelphia who exported products into the UK. The company also markets a range of personal leather goods and luggage under the "Filofax" brand. These organisers are available in over fifteen countries in the following sizes: A4, A5, Slimline, Personal, Pocket, Mini, Compact and Pocket Slimline.