Size Shoulder Width Chest Circumference Sleeve Length Back Length
S 15" / 38cm 36.2" / 92cm 14.6" / 37cm 26.8" / 68cm
M 17.3" / 44cm 38.6" / 98cm 16.3" / 41.5cm 28.3" / 72cm
L 18.1" / 46cm 41.7" / 106cm 17.1" / 43.5cm 29.1" / 74cm
XL 20.5" / 52cm 45.7" / 116cm 19.3" / 49cm 30.7" / 78cm