Double edged with black lining has expansion pleats for comfortable movement. Sleeves are split at wristband can be folded or unfolded you see fit. Really beautiful details that you expect w AK. Pockets are at a slight angle. Flattering piece. There is a buckle detail on the back that adds curvature to the form. If you undo the buckle you will see it has some marring. Barely noticeable when buckled. See images. Great interview, dinner, business jacket. It's really cute with jeans.