- Zips into the inner zipper of The North Face’s shells to create a single cold-weather jacket. The North Face’s zip-in system is featured on many of our shell jackets. Layering (by adding or removing garments to control temperature) is the most effective way to stay comfortable in a range of weather conditions and activities. Fast and easy layering is taken to new levels with the new zip-in technology.

Compatible zipper lengths match up the outer shell with the insulating layer. Jacket cuffs are secured together with a loop and snap closure system to prevent shifting and twisting