"The Patagonia Storm Shift Jacket is a shell built for days when conditions shift between runs and a fixed insulation level would leave a rider overdressed by noon or underdressed by the last chair. The zigzag fleece lining takes the edge off without adding bulk, so the midlayer underneath does the real thermal work. An adjustable powder skirt and helmet-compatible hood close the gaps when the terrain gets serious. What Our Gearhead® Experts Are Saying:""I run this over a midlayer I can swap out, a light fleece on a groomer day or a puffy when the storm rolls in, and the shell handles whatever the mountain throws at it without locking me into one temperature range."""