J46 is an old dog with an arsenal of new tricks. Climashield® continuous filament insulation on the inside. New Gore-Tex Infinium® shell fabric on the outside. Press buttons and an 8 MM 2-way metal zip protect the center line. An additional 5 MM zip ingeniously converts the collar to protect your neck. Despite being able to pack down into the convertible collar, the new stowable Storm Hood is one of our finest ever. Two front facing flap pockets nod to tradition; while 2 canted WR zipped back pockets have an eye on the approaching horizon. All held together by impeccable Acronym tailoring, and an internally or externally deployable JacketSling.