Summer weather is warm, until it isn’t. So compact and light, there is no reason to leave it behind, our lightest Atom is there for you when the temperature drops. Strategically placed at the chest and back, the Coreloft™ insulation is efficient, light, and compressible. The Tyono™ 20 outer balances airflow with wind resistance and has a DWR finish to repel moisture. Stretch fleece side panels ventilate and an uninsulated hood adds coverage and buttons out of the way when not in use.

• Moisture-wicking
• Breathable
• Compressible and packable
• Insulated
• Wind resistant
• Ultralight
• Fleece stretch side panels allow for ventilation
• Composite Mapping Technology strategically places each fabric for most effective protection and climate management
• Coreloft™ Compact 40 synthetic insulation in the core provides warmth
• Uninsulated, mesh lined sleeves give light protection and regulate temperature
• Trim fit for base layer or light mid-layer use
• Drop back hem
• Adjustable hem drawcord
• Articulated elbows
• Gusseted underarms for mobility and comfort
• Stowable hood
• Adjustable, low profile uninsulated StormHood™
• Two hand pockets with zippers
• Full front zip with chin guard
• No Slip Zip™ front zipper