1: The product size is   Asian size, It is smaller than EU/US/RU/BR/UK size ! 2: All the size is provide for your reference, Please allow 1 ~ 3 cm error, 1 cm is equal to 0.39 inch. 3: If you not sure of your size, please tell us your height __cm  and weight __kg ! 4: Please allow reasonable color difference due to individual computer monitor. 5. If you not wear Asian size usually , Please choose 1-2 larger sizes than your normal wear. Men Size (Asian Size) Unit:cm Asian Size Shoulder Chest Length Sleeve Height Weight CM CM CM CM CM Kg S 42 104 66 60 150-160CM 48-58kg M 44 108 68 62 160-170CM 56-66kg L 46 112 70 63 165-175CM 65-75kg XL 48 116 72 64 170-180CM 72-82kg XXL 50 120 74 65 175-185CM 80-90kg XXXL 52 124 76 66 180-190CM 85-96kg 4XL 55 128 78 68 188-205CM 95-106kg