Model is 5'10"/ 178cm and weighs 159lbs/ 72.5kg. Wears a size M. Please use this info as a general guide as measurements are approximate. Size Shoulder Chest S 18.7" / 47.5 cm 41.3" / 105 cm M 19.3" / 49 cm 43.3" / 110 cm L 20.1" / 51 cm 45.3" / 115 cm XL 20.9" / 53 cm 47.2" / 120 cm XXL 21.5" / 54.5 cm 49.2" / 125 cm Size Sleeve Length S 23" / 58.5 cm 25.8" / 65.5 cm M 23.6" / 60 cm 26.4" / 67 cm L 24.2" / 61.5 cm 27" / 68.5 cm XL 24.8" / 63 cm 27.6" / 70 cm XXL 25.2" / 64 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. **