When mountaineering legend Ueli Steck hunkers down at altitude, he turns to the Mountain Hardwear Men's Nilas Down Jacket for lofty warmth he can count on. The precedent setting Q. Shield Down 850 fill insulation is infused with a permanent water resistant treatment that allows the down to stay warm and lofty in wet and humid conditions. The active fit is specifically designed to be used with tools, harnesses, packs, and the like, and the baffle construction eliminates cold spots. An insulated hood can be pulled up to protect your noggin from the elements, while wrist gaskets keep wind and snow from blowing up your arms.