Jack wolfskin northern sky jacket mens the mens jack wolfskin northern sky jacket is perfect for wintertime adventures crafted with texapore waterproof fabric that helps to keep you dry while still maintaining breathability coupled with microguard insulation which is resistant to moisture and helps keep you warm no matter what the weather is like these jack wolfskin jacket also benefits from two zip pockets to the waist and one internal pocket so you can keep your essentials with you comple