Shirt measurements are approximately as follows:
First shirt adult M: W=53cm/L=65cm, L: W=55cm/L=67cm, XL: W=57cm/L=69cm
Second shirt adult M: W=49cm/L=61cm, L: W=51cm/L=64cm, XL: W=52cm/L=65cm
(W=width measured across chest / L=length measured down the back)