Performing as midlayer and standalone across a broad range of activities and output levels, the iconic Atom is an Arc‘teryx mainstay. Over time, we have refined the design to elevate performance, improve durability and extend its versatility. Its Coreloft™ Compact insulation retains heat when wet and withstands repeated packing and unpacking. Light, soft and durable, the Tyono™ 20 face fabric resists wind and weather, and stretch fleece side panels improve ventilation and freedom of movement.

Technical Features:

Moisture-resistant outer face fabric
Breathable Lightweight
Compressible and packable
Wind resistant
Collar Configuration
Mid-height collar is insulated and fleece-lined, layers well
Construction
Performance stretch fleece side panels give ventilation
Resilient Coreloft™ Compact 60 insulation is breathable, warm, and light, performs if wet, and delivers loft retention that resists packing out
Light, soft Tyono™ 20 is air permeable
Cuff & Sleeves Configuration
Stretch-knit cuffs
Cuff construction increases durability, eases layering and removal
Design & Fit
Trim fit for base layer or light mid-layer use
Fabric Treatment
DWR (Durable Water Repellent) finish repels moisture
Hem Configuration
Dual lower hem adjusters
Drop back hem
Laminated hem
Pocket Configuration
Two hand pockets with hidden zippers
Internal chest pocket with zip
Sustainability
Dope dyed lining fabric
Contains materials that meet the bluesign® criteria
Zippers & Fly Configuration
No Slip Zip™ front zipper
Custom TPU zipper pulls are easy to operate and glove-friendly

MATERIALS & CARE

Self: Tyono™ 20 denier shell with FC0 DWR treatment - 100% nylon
Stretch fleece - 94% polyester, 6% elastane
Insulation: Coreloft™ 60 (60 g/m²) - 100% Recycled Polyester - bluesign Approved Material
Lining: Dope Permeair™ 20D - 100% nylon - Dope Dyed, bluesign Approved Material (select colours)
Care
Machine Wash Gentle Low
Tumble Dry Gentle Low
Do Not Bleach
Wash Dark Colours Separately
Do Not Dry Clean
Do Not Iron
Do Not Use Fabric Softener
Double Rinse
Do Not Wring

All measurements in inches

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