Inspired by our popular Knicker style, the Fernos Insulated Pant is your go-to layer for comfort in super cold conditions—from cold winter running to stacking firewood to layering up around a bonfire. An updated fit means less bunching and a cleaner drape, so it looks as good as it feels. Stretch panels and articulation create freedom of movement, and an encased elastic waistband makes this cozy favorite easy to slide on or off for layering transitions. The soft Relance™ Primeflex shell is paired with PeakFill® Active Insulation that traps warmth and still breathes. A new zip ankle opening lets you wear it over a boot, slide under layers or adjust the fit between the mountain and town.