Post #4508943

The "ppk" name is after both "passport" and "pocket". It's a little wider than Filofax Pocket, because it's really designed more to be used in conjunction with a Filofax Personal size personal organizer, but still a little smaller than ISO/IEC 7810 ID-3 passport size, which is 88 x 125 mm, so it fits inside products designed for passports. You could, of course, use it on its own, but it won't fit current Filofax Pocket size ring metals, without repunching.