It's thin, so it can be worn for a year. It's cute, so I'm honestly hesitant. I usually wear a size L, but it fits with room to spare. DIESEL Category: Men's Outerwear, Jackets, Blousons/Jumpers Item: Gathered Sleeve Nylon MA-1 Jacket SILENCE IN NOISE Marked Size: JPN: XS Reference Size: Japanese Size: L Actual Size: Shoulder Width 50cm, Body Width 72.5cm, Length 68cm, Sleeve Length 58.5cm Material: 100% Nylon Wrinkled due to the wrinkle processing.