Comfort that works as hard as you do. The Proton Heated Baselayer Pant delivers midweight warmth with a soft lined interior, knit outer shell, and 3 heat zones for lasting comfort. Designed to layer or stand on its own, it features flat stitching, an adjustable drawstring waistband, and two YKK zippered pockets for secure storage. Built for cold mornings, busy days, and everything in between.