German Sympatex Parka Sizing Chart

Finding Your Size
You should be fine going by the indicated US size, but here are some measurements in case you want to dig a little deeper.

Size	Front Length Fully  Zippered and Snapped	Chest circumference
I	31"	48.5"
II	33.5"	50.5"
III	34.5"	52.5"
IV	37.5"	57"