Constructed of an amazing high-loft grid-channel fabric, it's built to perform. The high-loft = high-warmth. The grid channels = high breathability, and rapid drying. In essence you're warm, dry and ready to roll! (Wear this alone, as an outer layer in warm weather, or as the ultimate mid-level layering piece.) Lounge in absolute comfort. The comfort waist and super soft inside will have you living in these for as long as you can get away with it. (We don't thing they qualify as work pants in case you were going to try get away with it.)  This one is a staff favorite!