It's Asian Size. Not US Size. It's much better buy 1-2 size Bigger.
Size M/ Bust 94cm Shoulder 39cm Length 65cm Sleeve 18cm
Dimension L/ Bust 98cm Shoulder 40cm Length 67cm Sleeve 19cm
Size XL/ Bust 102cm Shoulder 41cm Length 69cm Sleeve 20cm
Dimension XXL/ Bust 106cm Shoulder 45cm Length 71cm Sleeve 21cm
As a result of differences in the dimension of Europe, America as well as Asia dimension, so please buyers prior to purchasing this product recommendation size graph carefully, so as not to trigger unneeded problem. Thank you dear customers