Description
Atom SL Hoody Men’s is an insulated jacket designed for alpine adventures and hiking, built as a light, packable layer for big efforts in cold, wet conditions with breathable, weather-resistant protection.
- Product Type: Men’s most packable insulated jacket
- Material: Synthetic Fill
- Weight: 280g
- Stretch synthetic insulation in the body with no insulation in the sleeves or hood to focus warmth on the core and maximise packability
- Updated with Fortius™ Air 20 fabric and an FC0 DWR finish for mobility and weather resistance
- Lined StormHood™ (no longer stowable) and Octa® Fleece side panels for enhanced breathability
Layer it under a shell jacket for wet alpine days, and pair with Gore-Tex pants for all-weather hiking.
Lighter than the original, the Atom SL Hoody is one of the most useful (and packable) pieces you can own. Wear it as a standalone layer when trail runs take you through cold, wet weather or layer it with a waterproof shell when mountain pursuits demand additional warmth and mobility. Breathable and weather-resistant, it has stretch insulation in the body but not the sleeves or hood — maximizing packability while still delivering focused warmth to your core.
What’s been updated: Updated with recycled Fortius™ Air 20 fabric, recycled stretch synthetic insulation, and FC0 DWR finish for improved mobility and a lower footprint. New Octa® Fleece side panels give enhanced breathability and less micro shedding. The StormHood™ is now lined and no longer stowable. The Bird logo is embroidered for long lasting visual.
Need a heavier option? Try the Atom Hoody.






















