Model Height Weight Wearing Size 1 5'9" / 175cm 149lbs / 68kg 36 2/Shown 5'10" / 178cm 159lbs / 72.5kg 38 3 5'11" / 180cm 176lbs / 80kg 40 4 6' / 182cm 187lbs / 85kg 42 5 6' / 183cm 200lbs / 90kg 44 6 6' / 182cm 209lbs / 95kg 46 Please use this info as a general guide as measurements are approximate. Size Shoulder Chest 36 17.3" / 44 cm 42.1" / 107 cm 38 18.1" / 46 cm 44.1" / 112 cm 40 18.5" / 47 cm 46.1" / 117cm 42 19.3" / 49 cm 48" / 122 cm 44 20.1" / 51 cm 50" / 127 cm 46 20.9" / 53 cm 52" / 132 cm Size Sleeve Length 36 23.8" / 60.5 cm 23.2" / 59 cm 38 24.4" / 62 cm 23.8" / 60.5 cm 40 25" / 63.5 cm 24.4" / 62 cm 42 25.6" / 65 cm 25" / 63.5 cm 44 26.2" / 66.5 cm 25.6" / 65 cm 46 26.8" / 68 cm 26.2" / 66.5 cm In order to best determine fit, it may be helpful to compare our garment’s measurements to a similar garment you already own. Lay your garment on a flat surface and take all measurements from the outside of the garment. Click here to check out our Garment Measuring Guide. ** If you are still confused, you can Contact Us to help you choose the size. **