From the Home of Jameson

TRAINING TOP SIZE CHART
Size measured in inches

 Size S M L XL XXL
EUR 38 40 42 44 46
UK 12 14 16 18 20
FR/ES 36 38 40 42 44
US 10 12 14 16 18
Length 29 29.5 30 30.5 31
Shoulder 16.5 17 18 19 19.5
Chest 39 42.5 45.5 49 52
Hem 38.5 42 45 48 57
Cuff
4 4 4 4.5 5