I'm afraid that you regard the size as Euro Size and US Size.please do not follow system size chart !!!
<br />  if you want make a very correct choice you should choose by the size chart at the Second image !!!
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<br />>available: S, M, L, XL,XXL
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<br />>ASIA SIZE Shoulder / Chest/ Length / Sleeve
<br />   S:42cm/96cm/64cm/65cm
<br />M:43cm/100cm/66cm/67cm
<br />L:44cm/104cm/68cm/69cm
<br />XL:45cm/108cm/70cm/70cm
<br />XXL:46cm/112cm/72cm/72cm