Model is 5'10"/ 178cm and weighs 159lbs/ 72.5kg. Wears a size 38. Please use this info as a general guide as measurements are approximate. Size Shoulder Chest 36 19.3" / 49cm 44.5" / 113cm 38 19.9" / 50.5cm 46.5" / 118cm 40 20.5" / 52cm 48.4" / 123cm 42 21.1" / 53.5cm 49.6" / 126cm 44 21.7" / 55cm 52" / 132cm Size Length Sleeve 36 27.6" / 70cm 22.8" / 58cm 38 28.3" / 72cm 23.4" / 59.5cm 40 29.1" / 74cm 24" / 61cm 42 29.7" / 75.5cm 24.4" / 62cm 44 30.3" / 77cm 24.8" / 63cm 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. **