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 18.5" / 47cm 41.3" / 105cm 38 19.1" / 48.5cm 43.3" / 110cm 40 19.7" / 50cm 45.3" / 115cm 42 20.3" / 51.5cm 47.2" / 120cm 44 20.9" / 53cm 48.8" / 124cm Size Sleeve Length 36 23.2" / 59cm 27.8" / 70.5cm 38 24" / 61cm 28.3" / 72cm 40 24.4" / 62cm 28.9" / 73.5cm 42 24.8" / 63cm 29.5" / 75cm 44 25.2" / 64cm 30.1" / 76.5cm 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. **