Size Length  Chest 
XS
S 69 cm (27.1'') 49 cm (19.2'')
M 71 cm (27.9'')   51 cm (20.0'')
L 73 cm (28.7'') 53 cm (20.8'')
XL 75 cm (29.5'') 55 cm (21.6'')
XXL 77cm (30.3'') 57 cm (22.4'')

*Numbers given may differ +/- 1 cm for some t-shirts*