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", 167lbs / 178cm, 76kg. Size L. Size Shoulder Chest S 20.9" / 53 cm 46.5" / 118 cm M 21.7" / 55 cm 48" / 122 cm L 22" / 56 cm 50.4" / 128 cm XL 22.4" / 57 cm 52" / 132 cm XXL 23.2" / 59 cm 54.3" / 138 cm Size Length Sleeve S 26.8" / 68 cm 24" / 61 cm M 27.6" / 70 cm 24.4" / 62 cm L 28.3" / 72 cm 24.8" / 63 cm XL 29.1" / 74 cm 25.2" / 64 cm XXL 29.9" / 76 cm 25.6" / 65 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. **