Made with Polartec® Powerstretch®, this baselayer delivers durable 4-way stretch, high insulation, and a soft brushed interior that stays comfortable against the skin. The high-back waistband, seamless crotch gusset, and flexible fit layer smoothly under any shell to keep your lower body protected in cold conditions. Pair it with the Powerstretch® Thermal Layer – 1/2 Zip Shirt for an unmatched next-to-skin system.