Xidi Men Boy Summer Outdoor Sport Quick Dry Short-Sleeves T-Shirt 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) US XL(180-185cm 75kg-80kg) (5'11"-6'1" 166-177lbs)