When you're attempting to reach the heavens on Earth's tallest mountains, it's important to have a god looking out for you. Sure, the Valandre Expedition Thor 12 Degree Down Sleeping Bag isn't exactly like having the Norse god of thunder, lightning, and storms on your side, but it certainly is the next best thing. Lofty 850 gray goose down insulates you while you recover for the next day's big push. European Norm ratings give this bag a comfort level at 2 degrees Fahrenheit, but Valandre's crew suggest you can survive in temps well below zero, should an unexpected cold front move through the mountains. Thor's nylon ripstop shell maximizes durability and minimizes weight for your convenience. The shell, along with the bag's polyester ripstop lining, has a DWR treatment too so you stay dry when water is an issue. Valandre integrated a static drawcord in the hood to cinch it tightly around your forehead when temps get critical. The bag also has an anatomic draft collar to keep warmth in the bag, while its interlocking draft tube covers the quarter length zipper to keep cold out.