Model is 5'10"/ 178cm and weighs 160lbs/ 72.5kg. Wears a size 38. Please use this info as a general guide as measurements are approximate. Size Shoulder Chest 36 18.1" / 46 cm 41.7" / 106 cm 38 18.9" / 48 cm 43.3" / 110 cm 40 19.5" / 49.5 cm 44.9" / 114 cm 42 20.1" / 51 cm 46.5" / 118 cm 44 20.9" / 53 cm 48" / 122 cm Size Sleeve Length 36 23" / 58.5 cm 23.6" / 60 cm 38 23.6" / 60 cm 24.4" / 62 cm 40 24.2" / 61.5 cm 25.2" / 64 cm 42 24.8" / 63 cm 26" / 66 cm 44 25.4" / 64.5 cm 26.8" / 68 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. **