It is a nice product, but I'm 180cm, 85kg and 4XL is still uncomfortably tight. I can hardly move in it. I think it's because the pant legs are too narrow. Feels like my thighs are about to burst them when I bend my legs. Are European thighs thicker than Asian? Even my wife that is somewhat slimmer found them tight. So it seems more a problem of cut than of size. So all in all, a nice pair of pants for standing or lying down, not so good for moving about.
Warm trousers that I used i/o a sleeping bag in a bivy bag while bikepacking.