jeansian Men's Casual Slim Fit Short Sleeves Polo Shirt T-Shirt Tee Tops U007 Cotton Blend Slim Fit Style, If You Want Loose Fit , Please Choose 1 Size Up. USA S(165-70cm 60kg-65kg) (5'5"--5'7" 133--144lbs) USA M(170-175cm 65kg-70kg) (5'7"-5'9" 144-155lbs) USA L(175-180cm70kg-75kg) (5'9"-5'11"155-166lbs) USA XL(180-185cm 75kg-80kg) (5'11"-6'1" 166-177lbs) Over Weight 180 LBS May NOT Fit This Shirt. Please Check Our Sizes Chart in Description Before Purchasing.(NOT Amazon size Chart)