Model is 5'10"/ 178cm and weighs 136lbs/ 62kg. Wears a size M. Please use this info as a general guide as measurements are approximate. Size Chest Length S 18.3" / 46.5 cm 42" / 107 cm M 18.9" / 48 cm 44" / 112 cm L 19.5" / 49.5 cm 46" / 117 cm XL 20.1" / 51 cm 48" / 122 cm XXL 20.7 / 52.5 cm 50" / 127 cm Size Sleeve Length S 23.6" / 60 cm 25.4" / 64.5 cm M 24" / 61 cm 26" / 66 cm L 24.4" / 62 cm 26.6" / 67.5 cm XL 24.8" / 63 cm 27.2" / 69 cm XXL 25.2" / 64 cm 28" / 71 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. **