Lands' End Navy Blazer for Men

Classic navy blazer by Lands' End. Ideal for every event. Timeless and elegant design. unfortunately I’m not 100% sure on the size. it was purchased for someone with a smaller build. Maybe 5’9 weight 170 ish. Best I can tell is what’s on the hanger noting a 38R. You can surf through the rest of my items and maybe see sizes of other clothes to give a better idea of the size.