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):115cm/45.3"
Shoulder to Shoulder:45cm/17.7"
Fitted for Chest size 34"~36" ,about an US S
For size XL
Chest(Double Armpit to Armpit):120cm/47.3"
Shoulder to Shoulder:46.5cm/18"
Fitted for Chest size 38"~40" ,about an US M
For size XXL
Chest(Double Armpit to Armpit):125cm/49.3"
Shoulder to Shoulder:48cm/18.9"
Fitted for Chest size 40"~42" ,about an US M/L
For size XXXL
Chest(Double Armpit to Armpit):130cm/51.3"
Shoulder to Shoulder:50cm/19.7"
Fitted for Chest size 42"~44" ,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.