Precision Fit (Lay Flat Measurements):
S (UK 10/EU 38): 26.38" L | 17.32" W | 6.3" Sleeve | Fits 34.64" Chest
M (UK 12/EU 40): 27.17" L | 18.9" W | 6.69" Sleeve | Fits 37.8" Chest
L (UK 14/EU 42): 27.95" L | 20.47" W | 7.09" Sleeve | Fits 40.94" Chest
XL (UK 16/EU 44): 28.74" L | 22.05" W | 7.48" Sleeve | Fits 44.1" Chest
XXL (UK 18/EU 46): 29.53" L | 23.62" W | 7.87" Sleeve | Fits 47.24" Chest