Teaming lightweight and technical performance with innovative styling the jack wolfskin mens zenon altis jacket is bred for all weather adventure combining two different types of insulation the core of the jacket is filled with 9010 duck down with a 700 fill power that generates deep warmth the sleeves boast the fibercloud ht synthetic filling that is quick drying and easy to care for as well as blocking out seasonal chills the jacket works in conjunction with compatible shells to provid