The Atom SL Hoody combines lightweight insulation with exceptional versatility for mountain pursuits. Its strategically placed core warmth works solo on cool, damp days or layers effortlessly under a shell for added protection. Breathable, weather-resistant fabric sheds moisture while maintaining packability, making it perfect for alpine climbers and trail runners seeking minimal weight without sacrificing performance. The streamlined hood and fitted sleeves compress easily into your pack.

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.

Technical features

• Moisture-resistant outer face fabric
• Breathable
• Lightweight
• Compressible and packable
• Durable
• Wind resistant
• Ultralight

Construction

• Fortius™ Air 20 face fabric effectively balances air permeability and weather resistance with lightweight durability and stretch
• 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

Cuff & Sleeves configuration

• Uninsulated, mesh lined sleeves give light protection and regulate temperature

Design & Fit

• Fitted, with articulated patterning for mobility and comfort
• Garment Centre Back Length: Size S is 26"/65cm - Varies by size

Fabric treatment

• FC0 DWR (Durable Water Repellent) finish repels moisture and is free from intentionally added PFAS

Hem configuration

• Adjustable hem draw cord seals out drafts

Hood configuration

• Adjustable, low profile uninsulated StormHood™

Pocket configuration

• Two hand pockets with zippers

Sustainability

• 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

Materials

• Contrast: Octa® Polyester Fleece, 40D Delta Face, 122gsm - 100% Polyester
• Synthetic Insulation: Coreloft™ Stretch, 40gsm - 100% Polyester
• Lining: Recycled 20d nylon plain weave weft stretch FC0 DWR, 58gsm - 88% Nylon, 12% Elastane
• Body: Fortius™ Air 20 - Plain Weave, FC0 DWR, 58gsm - 88% Nylon, 12% Elastane
• Origin of fabric: TAIWAN, CHINA
• Origin of dyeing: TAIWAN, CHINA
• Origin of Manufacture: BANGLADESH
• May release plastic microfibres into the environment when washing