Last winter I carried a 470 gram prototype over frozen switchbacks above Crown Pass and wrote down every point where the shell asked for attention. The failures were not dramatic: a cuff that drank snowmelt, a pocket caught under the hip belt, a hood that pulled vision off the boot track.
Build for the Hand in Gloves
The next revision moved the chest pocket twelve millimeters higher and cut the pull tabs from a stiffer laminate. That sounds minor until the wind rises and the hand becomes an instrument, not a hand. Technical clothing earns trust when it removes decisions from bad weather.