Women's Atom Hoody SV - Arctic SilkDESCRIPTION The warmest jacket in Arc'teryx's Atom family made with industry engineers, scientists, and hardcore athletes who understand that staying warm is staying safe. With female specific thermo mapped insulation (warmer 120gsm in the body, stretchy 60gsm in the pits) that strategically traps and dumps heat, so you won't get soggy even when you're working for that summit. A cornerstone of an all conditions layering system, the Atom SV Hoody