KEEN WEAR MASKS Contents: 2 masks Size: XS/S Color: Gray Material: Body: 100% Cotton KEEN is a popular American outdoor footwear brand that sells sandals and shoes. This mask has a cute KEEN logo on it. ☺︎ The size is XS/S, but since it's an American brand, it shouldn't be too small for Japanese people. I received these as a special gift from the staff when I made a purchase at a KEEN authorized store. I haven't had a chance to use them, so they've been stored at home. The box has some scratches and minor damage from storage, but the contents have never been opened. Please refrain from purchasing if you are sensitive to this, as they have been stored at home. No returns accepted.