When venturing into the backcountry in the middle of winter, bring along the Lynx Gore WindStopper Sleeping Bag by Western Mountaineering and sleep comfortably. This powerhouse of mummy bag is crafted from Gore Windstopper fabric for excellent protection against wind and cold. Packed with 850-fill down, the Lynx offers unmatched warmth in a lightweight package. Its V-Block side baffle insures perfect down control so that down stays where it's needed most. A full 3-dimensional down filled collar prevents body heat from radiating up and out of the bag. The draft tube is also made of Gore Windstopper and has a stiffening tape to keep the tube in place and prevent heat from escaping between the zipper coils, so you're well-rested and ready to go again at first light.