Precision Sizing (Lay Flat Measurements):
XS: 27.56" L | 18.9" W | 7.87" Sleeve
S: 27.95" L | 19.88" W | 8.03" Sleeve
M: 28.74" L | 20.87" W | 8.27" Sleeve
L: 29.53" L | 21.85" W | 8.5" Sleeve
XL: 30.31" L | 22.83" W | 8.74" Sleeve
XXL: 31.1" L | 24.02" W | 9.06" Sleeve
3XL: 31.89" L | 25.2" W | 9.37" Sleeve
4XL: 32.68" L | 26.57" W | 9.76" Sleeve
5XL: 33.46" L | 27.95" W | 10.16" Sleeve