I received this on a business trip to Germany a long time ago. It's a bifold wallet that can hold a Eurocheque card. I think it's also convenient as a pass case. Size when folded: Approximately 13 x 9.5 cm ※Eurocheque System: Eurocheque was a cross-border check system introduced in 1968, functioning as an alternative to traveler's checks. The Eurocheque card was used to guarantee check payments. History: This system declined in importance with the spread of ATMs and electronic payments in the 1990s, and its international guarantee function ended on January 1, 2002.