Model is 5'9" / 175cm and weighs 143lbs/ 65kg. Wears a size M. Please use this info as a general guide as measurements are approximate. Size Shoulder Chest S 18.1" / 46 cm 39.4" / 100 cm M 18.9" / 48 cm 40.9" / 104 cm L 19.5" / 49.5 cm 43.3" / 110 cm XL 20.1" / 51 cm 44.9" / 114 cm XXL 20.9" / 53 cm 46.9" / 119 cm Size Sleeve Length S 22.6" / 57.5 cm 25.8" / 65.5 cm M 23.2" / 59 cm 26.4" / 67 cm L 23.8" / 60.5 cm 27" / 68.5 cm XL 24.4" / 62 cm 27.6" / 70 cm XXL 25" / 63.5 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. **