I love this jacket and wish I could keep it! I have gained weight and have gotten to big for it. It's had minimal use and has been sitting in the closet. Light, versatile synthetically insulated hoody works as a midlayer and standalone. Atom Series: Synthetic insulated midlayers. Atom Hoody Women's Steeped in the alpine, this versatile hoody has warmed climbers, hikers, backcountry skiers and downtown commuters. Worn as a midlayer or standalone, it performs across a range of conditions and output levels. Coreloft™ Compact insulation retains warmth even if wet and has loft retention that withstands years of packing and unpacking. The water resistant Tyono™ 20 face fabric is soft, breathable and durable, stretch side panels improve ventilation and freedom, and the insulated StormHood™ adds warmth.