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.) Layer this one or wear it alone for feature performance. Thumb-holes, dual panel construction for performance and fit, comfort collar.