These trousers are crafted from an all-way stretch fabric for excellent range of motion when you’re picking up the pace on the trail. Thermolite® hollow-core yarn provides lightweight warmth while remaining highly breathable for superior heat regulation in chilly temps. The water-repellent treatment also keeps out light snow and rain. And a soft, brushed interior helps you stay extra cosy. A stretch, pull-on waistband sits comfortably against your skin and reduces bulk. Store small items like an ID or car keys in the open side pocket. The women’s Thermo Fit Pants provide extra warmth and comfort for running on cold days.