Shirt measurements are approximately as follows:
1st shirt adult M: W=59cm/L=66cm, L: W=60cm/L=70cm, XL: W=63cm/L=73cm
2nd shirt adult M: W=cm/L=cm, L: W=cm/L=cm, XL: W=56cm/L=73cm
(W=width measured across chest / L=length measured down the back)