Model is 5'10"/ 178cm and weighs 136lbs/ 62kg. Wears a size 38. Please use this info as a general guide as measurements are approximate. Size Shoulder Chest 36 18.5" / 47 cm 42.5" / 108 cm 38 19.1" / 48.5 cm 44.5" / 113 cm 40 19.7" / 50 cm 46.5" / 118 cm 42 20.3" / 51.5 cm 48.4" / 123 cm 44 21.3" / 54 cm 50.4" / 128 cm Size Sleeve Length 36 23.6" / 60 cm 25.2" / 64 cm 38 24.2" / 61.5 cm 26" / 66 cm 40 24.8" / 63 cm 26.6" / 67.5 cm 42 25.4" / 64.5 cm 27.4" / 69.5 cm 44 26" / 66 cm 28.1" / 71.5 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. **