This was a gift, and I've only used it a few times as I don't often ride the train. It's a versatile color that's easy to match, and I think it's not very common, so it's recommended for those who don't want to be like everyone else and those who like cute designs. The upper right features a stamp and postmark, with the date being April Fool's Day, adding a playful touch. The design mimicking a sealing stamp on the back and the cut of the card slots inside perfectly recreate an ENVELOPE (envelope) series. Please purchase only if you understand that this is a used item.