Model Height Weight  Size 1 5' 7" / 170cm 154lbs / 70kg S 2 5' 10" / 178cm 160lbs / 72.5kg M 3/Shown 5' 11"/ 180cm 176lbs / 80kg L 4 5' 10" / 178cm 194lbs / 88kg XL 5 6' / 182cm 221lbs / 100kg XXL Please use this info as a general guide as measurements are approximate. Size Shoulder Chest S 16.1" / 41cm 34.6" / 88cm M 16.7" / 42.5cm 36.6" / 93cm L 17.3" / 44cm 38.6" / 98cm XL 18.1" / 46cm 40.6" / 103cm XXL 18.7" / 47.5cm 42.5" / 108cm Size Length Sleeve S 25.2" / 64cm 7.1" / 18cm M 25.8" / 65.5cm 7.3" / 18.5cm L 26.6" / 67.5cm 7.5" / 19cm XL 27.6" / 70cm 7.9" / 20cm XXL 28.3" / 72cm 8.3" / 21cm 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. **