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 16.7" / 42.5 cm 37.8" / 96 cm M 17.3" / 44 cm 39.4" / 100 cm L 18.1" / 46 cm 40.9" / 104 cm XL 18.7" / 47.5 cm 42.5" / 108 cm XXL 19.3" / 49 cm 44.1" / 112 cm Size Sleeve Length S 7.1" / 18 cm 25.2" / 64 cm M 7.9" / 20 cm 26" / 66 cm L 8.3" / 21 cm 26.8" / 68 cm XL 8.5" / 21.5 cm 27.6" / 70 cm XXL 8.7" / 22 cm 28.3" / 72 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. **