Designed by a Japanese brand named after Nanga Parbat, also known as "Killer Mountain," this Down Insulated Jacket knows how to handle its own in the coldest conditions. Boasting an incredible warmth-to-weight ratio, its quilted design stows into its own pocket. There's also a storm flap behind the main zippered opening, as well as elasticated cuffs, hem, and a ribbed neckline, to seal in the heat. Last but not least, a hi-vis reflective logo on the chest keeps you safe and seen once the sun's dipped below the horizon.