Sizing chart

Men's Sizing (Unit:Inch)

Size	Chest	Back Length
S	42.5	31.8
M	44	33
L	45.5	34.2
XL	48	35.4
XXL	49.5	36.5
XXXL	52.5	37.7

Kid's Sizing (Unit:Inch)

Size	Chest	Back Length
S	34.6	22.8
M	36.2	24
L	37.8	25.2
XL	39.4	26.4
XXL	40.9	27.6