The Atom is the ultimate outdoor kit essential, delivering reliable, breathable warmth for chilly alpine starts and unexpected summit squalls. Built with lightweight Coreloft insulation that won't pack out (even after years of wear) and stretchy fleece side panels, it traps and dumps heat strategically. Slide it under a hardshell for a clutch layering system that'll keep you warm, even if it gets wet.

What's been updated: Updated with recycled Coreloft™ insulation and DWR (Durable Water Repellent) free from intentionally added PFAS.

Technical features

• Moisture-resistant outer face fabric
• Breathable
• Lightweight
• Wind resistant

Collar configuration

• Tricot lined collar for next-to-skin comfort
• Cuff & Sleeves configuration
• Stretch-knit cuffs

Design & Fit

• Fitted, with articulated patterning for mobility and comfort
• Garment Centre Back Length: Size S is 26"/66cm - Varies by size
• Recycled Coreloft™ insulation delivers breathable warmth that resists packing out
• Side hem vent for improved mobility and freedom of stride

Fabric treatment

• DWR (Durable Water Repellent) finish repels moisture and is PFAS-free

Hem configuration

• Dual hem cinches seal out drafts and adjust length

Pocket configuration

• Internal chest pocket
• Two hand pockets with zippers
• Internal chest pocket with zip

Sustainability

• Contrast - recycled content
• Insulation - bluesign® approved material, recycled content
• Lining - dope dyed some colours, recycled content
• PFAS (Per- and polyfluoroalkyl substances) Compliant

Zippers & Fly configuration

• No Slip Zip™ front zipper
• Custom zipper pulls are glove-friendly

Materials

• Contrast: Knit Fleece, 215 gsm, polyester with FC0 DWR - 93% Polyester, 7% Elastane
• Body: 20dx20d nylon ripstop, FC0 DWR, 45gsm - 100% Nylon
• Synthetic Insulation: Coreloft™ 60 (60 g/m²) - 100% Polyester
• Lining: 20d recycled dope dyed nylon ripstop, FC0 DWR, 40gsm - 100% Nylon
• Origin of fabric: JAPAN
• Origin of dyeing: JAPAN
• May release plastic microfibres into the environment when washing