Size Difference Notice This size notice is for normal body type. If your weight is more than or less than the measurement given below, please consider ordering one size bigger or one size smaller. This brand, TheLees, is almost slim fit style. If you haven"t tried slim fit before, you would feel a bit tight so please buy one size bigger. Tag size given below is the size which is attached on cloth and label. For example, 5" 11", 165 lbs : If you like slim fit, please choose L sizes{L(US M)}. IF you like normal fit, please choose {XL(US L)}. M(US S) = 5"7"(170cm), 140 lbs(64kg) L(US M) = 5"9"(175cm), 155 lbs(70kg) XL(US L) = 5"11"(180cm), 175 lbs(80kg) 2XL(US XL) = 6"2"(188cm), 190 lbs(86kg) If you are still unsure about size, Could you please tell us Weight and Height in stones or Lbs and Inch? [Measurements] M(US S)... shoulder 43cm, chest 51cm, sleeve 63cm, TTL 67cm L(US M)... shoulder 45cm, chest 53cm, sleeve 65cm, TTL 69cm XL(US L)... shoulder 47cm, chest 55cm, sleeve 66cm, TTL 71cm 2XL(US XL)... shoulder 49cm, chest 57cm, sleeve 67cm, TTL 73cm