This is ISSEY MIYAKE's TRUNK PLEATS BAG. It's a shoulder bag with cute pleats. The color is the very popular black! I bought it at the official store in Ginza. It's very convenient because it can hold a water bottle and a folding umbrella! I haven't used it much, so it's in good condition, but it's still a used item, so I hope to do business with someone who understands that.