For your cold-weather treks, heat and water-repellency go a long way to making you forget the chill. We went to Iceland to research and develop gear that can handle those frigid conditions. The result? The head-to-hem coverage of this warm and relaxed puffer jacket, made with at least 75% sustainable materials, using a blend of recycled polyester and recycled nylon fibers.

Nike Therma-FIT ADV technology combines heat-regulating fabric with advanced engineering and features to help keep you warm in cold-weather conditions. We used recycled PrimaLoft® insulation with tiny fibers that create pockets of air. These fibers help hold warmth while letting moisture escape. It's designed to keep you warm even when wet. There's less fill on the side panels for better mobility. Plus, the shell is water-repellent, helping you stay dry in wet conditions.

Need to pack the jacket away? We included a packable sack that for you to stash your gear when you need to layer down. It has a pull cord with Viking Icelandic beads that glow in the dark.

This one's built for total coverage. A full length zipper goes all the way up to the neckline. A hood helps keep the elements out. We also added a snood to help cover your mouth when temperatures get low.

ACG apparel is designed as a nesting system, so you can adapt and adjust to the climate around you. This jacket was made to wear over a baselayer, fleece or midlayer. Go with your normal size for layering. If you want a trimmer fit, we recommend sizing down.