The Men's Arc'teryx Atom Hooded Jacket is a do-it-all layer for light insulation in the outdoors. This versatile jacket can be utilized as a stand alone or midlayer, on cool to cold days, and it even insulates in wet weather. Hiking adventures, climbing trips, or just kicking back at camp around the fire, the nylon ripstop outer fabric is wind- and moisture-resistant. At the same time, Coreloft Compact 60 synthetic insulation brings the heat. It's lightweight and packable for stashing away when the day turns warm, and is easily pulled back on when the weather shifts for what seems like the millionth time of the day.