J Crew Two-Button Jacket in Super 120's Size 4 Featuring a slightly longer silhouette and dressmaker details. This versatile jacket looks just as smart with jeans as it does with trousers or a pencil skirt. lt's made from four-season Super 120s merino wool-it has a smooth finish, a refined drape and, best of all, you can wear it year-round. What else makes it so super is the measure of the fiber: the higher the number, the finer the fiber, and 120 is one of the finest! The Details: Super 120s merino wool. Notch collar. Two-button closure. Interior chest pocket, flap welt pockets. Functional buttons at cuffs. Back vent. Lined. Black. Size 4