The Jack Wolfskin Men's Caribou Crossing Track Insulated Jacket provides optimal warmth and comfort for high-intensity activities. Soft, knitted fleece NANUK 200 BIPOLAR JERSEY on the sleeves is both robust and breathable, whilst MICROGUARD synthetic insulation on the front provides extra protection against driving winds. The jacket can be configured and zipped in to an outer jacket to act as an insulating layer, or worn alone as an outstanding midlayer with great wicking performance.