What Our Gearhead(R) Experts Are Saying: "I've worn these pants on chilly hikes and after long ski days, and they hit that sweet spot of warmth and breathability. The ClimateSync venting really works-you can feel them open up when you're moving and close down when you stop. Plus, the relaxed fit and stretchy fabric make them super comfortable." When cold-weather adventures call, we slip into the Salomon Mountain Flex Pant for warmth and mobility without compromise. These pants combine PrimaLoft(R) insulation with a DWR-treated ripstop fabric to keep us comfortable from frosty trailheads to relaxing around the lodge. Salomon's ClimateSync Technology uses star-shaped perforations that open when we're active to let moisture out, and close when we pause to lock in warmth-keeping our comfort perfectly in balance. The relaxed fit and two-way stretch fabric give us freedom to move, while the elastic waistband with internal adjustment dials in a personalized fit. A breathable mesh lining adds airflow, and zippered hand pockets keep essentials secure. Reflective details boost visibility in low light, and elastic ankle inserts ensure a snug, comfortable fit. Whether we're hiking, traveling, or cooling down after sport, these pants adapt with us.