Not only is the Western Mountaineering Kodiak Gore WindStopper Sleeping Bag big enough to fit a bear-sized camper comfortably, but it's also warm enough to keep one hibernating all night long. Constructed with just over 30-ounces of lightweight, 850-fill goose down insulation (complete with seven-inch loft), this bag assures a toasty night's sleep for backpackers looking to cut weight when adventuring in the frosty outdoors. Not to mention, the Gore Windstopper fabric, combined with the down-filled draft tube, prevents frigid, howling winds from piercing your cozy slumber. And when you rouse from a dreamy night's sleep in the morning, toss your bag into the included stuff sack, easily store it in your pack, and hit the trail towards your next site.