Even when snowfall and extreme weather keeps you pinned in your tent for days on end, you're still going to have to go outside to shovel snow off the tent and use the facilities at some point. Make sure that you're prepared for the cold with the Arc'teryx Men's Ceres Down Jacket. The Ceres is the warmest jacket ever made by Arc'teryx the designers achieved this by using down composite mapping, which strategically places Coreloft synthetic insulation in places that may have moisture buildup, and using the warmer 850 fill down for the other areas. To enhance protection against mountain gusts, Arc'teryx used WindStopper fabric. Elastic cuffs and an adjustable waist drawcord further help to seal out the elements. The Ceres has an expedition fit, meaning that it's designed roomier than Arc'teryx's athletic fit so there's room for layering underneath without restricting movement, for the ultimate in cold weather protection.