I'm afraid that you regard the size as Euro Size and US Size.please do not follow system size chart !!!
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<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 /> Welcome ^_^Please look at the size and color carefully before you buy
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<br />>available: XS,S, M, L, XL
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<br />>ASIA SIZE      Waist /    Chest/ 
<br />   XS:        53-63cm/  75-85cm/    
<br />    S:       63-70cm/  80-90cm/   
<br />    M:      63-70cm/  80-90cm/    
<br />    L: 66.7-76.7cm/  85-95cm/    
<br />   XL:    73-83cm/ 90-100cm/       
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<br /> More surprises, please enter the store
<br /> Thank you I wish you a happy shopping       
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<br />Note:
<br /> 1 Please Contact us in time if you have any problem About the product,We can help you solve most of the troubles,then give you Good service.
<br /> 2 If you are not satisfied with the product that exists damaged or you did not receive the product and so on, you can immediately apply for a refund, we will return your money.
<br />The item we sell are in Asian size , This jacket is 2-3 size smaller than euro size!!!
<br />so we suggest if you what make a correct choice you should  choose by size chart
<br />the size chart is at the last image , please take care