Please carefully read the size info before purchase! Different products have different size info. Please use this info as a general guide as measurements are approximate. Model - 5' 10", 160lbs / 178cm, 72.5kg. Size M. Size Shoulder Chest S 18.1" / 46 cm 39.4" / 100 cm M 18.7" / 47.5 cm 40.9" / 104 cm L 19.3" / 49 cm 42.5" / 108 cm XL 19.9" / 50.5 cm 44.5" / 113 cm XXL 20.9" / 53 cm 46.5" / 118 cm Size Length Sleeve S 26.6" / 67.5 cm 22.6" / 57.5 cm M 27.2" / 69 cm 23.2" / 59 cm L 28" / 71 cm 23.6" / 60 cm XL 28.5" / 72.5 cm 24.2" / 61.5 cm XXL 29" / 74 cm 24.8" / 63 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. **