Steep, snowy switchbacks keep the effort steady and the cold close, and the Stio Fernos Insulated Pant is a low-bulk insulated pant that holds warmth without trapping heat. PeakFill Active insulation balances warmth and breathability, while a soft stretch shell, articulated knees, and an action gusset keep every high step moving freely. The trim fit sits close to the body for a clean drape under or over other layers. What Our Gearhead(R) Experts Are Saying:"After a few cold trailhead mornings, I noticed the zip ankle opens wide enough to pull these on over my boots without sitting down, and the elastic waist never dug in as the day warmed up."