Jeansian Mens Dress Casual Slim Fit Long Sleeve Polo T-Shirts 100% Cotton US XS(160--165cm 55--60kg)(5'3"-5'5" 121-132lbs) US S(165-170cm 60kg-65kg) (5'5"--5'7" 133--144lbs) US M(170-175cm 65kg-70kg) (5'7"-5'9" 144-155lbs) US L(175-180cm70kg-75kg) (5'9"-5'11"155-166lbs)