THE SIZE ON TAG IS ASIA SIZE,PLEASE CHECK FOR SIZE DETAILS, AS SIZING IS NOT ALL SAME FOR DIFFERENT MANUFACTURER.
Actual Size details(measured lay in flat):
For size L
Chest(Double Armpit to Armpit):104cm/41"
Shoulder to Shoulder:45cm/17.7"
Fitted for Chest size 34"~36" ,about an US S
For size XL
Chest(Double Armpit to Armpit):112cm/44"
Shoulder to Shoulder:46.5cm/18"
Fitted for Chest size 36"~38" ,about an US S/M
For size XXL
Chest(Double Armpit to Armpit):118cm/46.5"
Shoulder to Shoulder:48cm/18.9"
Fitted for Chest size 38"~40" ,about an US M
For size XXXL
Chest(Double Armpit to Armpit):125cm/50"
Shoulder to Shoulder:50cm/19.7"
Fitted for Chest size 40"~43" ,about an US L
* If you are not sure which size you should take.You can take one T shirt which is fitted for you, you may measure it lay in flat and compare with the above actual clothing size to pick your size.