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.

• Moisture-resistant outer face fabric

• Breathable

• Lightweight

• Compressible and packable

• Durable

• Wind resistant

• Ultralight

• Fortius™ Air 20 nylon liner is lightweight, breathable, and made with recycled content

• Stretch synthetic insulation is breathable, warm, and light, adds freedom of movement, and is made with recycled content

• Lightweight stretch Octa® Fleece side panels provide freedom of movement and improve ventilation

• Contains materials that meet the bluesign® criteria

• Shell - bluesign® approved material

• Contrast - recycled content

• Insulation - recycled content

• Lining - bluesign® approved material

• This article was treated with an anti-odour biocidal product (Polygiene)

• PFAS (Per- and polyfluoroalkyl substances) Compliant