Atom SV Hoody Women's is the warmest, thermo-mapped insulated jacket designed for hiking and trail use, built as the warmest thermo-mapped Atom layer for cold, mid-output mountain activities. Product Type: Women's insulated jacket Material: Coreloft™ synthetic insulation Thermo-mapped insulation uses 120gsm in the body and stretchy 60gsm in the pits to manage heat and moisture Updated hood design for better weather protection and easier repairability DWR (Durable Water Repellent) is free from intentionally added PFAS For hiking and trail layering, pair it with a women's shell jacket and a women's hiking pants . We designed the warmest jacket in our Atom family with industry engineers, scientists, and hardcore athletes who understand that staying warm is staying safe. Female-specific thermo-mapped insulation (warmer 120gsm in the body, stretchy 60gsm in the pits) 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 delivers serious protection on its own, and teams up with a hardshell to keep out any storm. What's been updated: Updated with recycled Coreloft™ insulation and DWR (Durable Water Repellent) free from intentionally added PFAS. Hood design has been updated for better weather protection and easier repairability. Need a lighter option? Try the Atom Hoody.