I will have to say the fit of this piece is great. I'm 6'2" 205 and 75in wingspan and the XL fit is perfect. It hugs the body but not too tight and obviously works great for layering. Usually shirts are always too short in the armlength but this bodytech XL fit great. The merino wool is not itchy as advertised. I haven't used it yet but plan to in a week for a camping trip. Thanks again.