I bought this online from RINKAN. I've only worn it once since purchasing it. I think the M size is rare, as the market is mostly L and above. I couldn't set up the authentication for Saint Michael. I recommend you have it authenticated yourself before giving a review. Saint Michael SAINT MICHAEL SAINT Mxxxxxx Saint Michael x VLONE Knit Sweater 22AW VLONE KNIT BONE Model number SM-A22-0000-094 Regarding SAINT MICHAEL products, each item is handcrafted with damage, stains, and cracked print processing to reproduce realistic aging! Color: Black系 (Black-based) Material: Cotton Neck: Other Shoulder width / Body width / Sleeve length / Length Shoulder width: 56cm Body width: 62cm Sleeve length: 67cm Length: 74cm