This jacket is a classic fit and is designed to allow for layering.
S = 45" Width at Chest, 35.5" Sleeve Length, 33.5" Center Back Length.
M = 47" Width at Chest, 36.5" Sleeve Length, 34" Center Back Length.
L = 50" Width at Chest, 37.5" Sleeve Length, 34.5" Center Back Length.
XL = 53" Width at Chest, 38.5" Sleeve Length, 35" Center Back Length.
XXL = 56" Width at Chest, 39.5" Sleeve Length, 35.5" Center Back Length.