This is guaranteed authentic. Purchased from the Real Real where they authenticate ALL items. Comes in real real dustbag. size XS iconic Coming Soon titanic hoodie. Drawstring hood. Extra long sleeves. Cotton. Fantastic preowned condition. Poshmark authenticates all items over $500. Chest 52” length 31”. Unisex. This is made to fit VERY OVERSIZED! Therefore listing as one size. Can EASILY fit up to an XL