Description of Arcteryx Fission AR Jacket The trim Arcteryx Fission AR features a helmet compatible stow hood, lightweight Primaloft® insulation and a shorter length cut for all around use in both alpine and urban settings. One hand pull cords make it easy to cinch out cold drafts and trap in body heat. Arcteryx reinforced the shoulders of the Fission AR Jacket for extra durability, and watertight zips seal out moisture. Stay warm and dry in the Fission AR Jacket. Features: Exclusive laminated Primaloft® non-quilt construction Hem drawcord Hip length Micro seam allowances (1/16") Smooth knit cuffs Two hand pockets with laminated zips WaterTight™ front and pocket zips Helmet compatible Stow Hood™ One hand pull cords Reinforced shoulders