Intentionally oversized. We recommend taking your true size. Models wear size S.
XS- 46" chest, 29" length, 21" arm length
S- 48" chest, 29.5" length, 21.5" arm length
M- 50" chest, 30" length, 21.5" arm length
L- 52" chest, 30.5" length, 22" arm length