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.
Size and Fit Tips: The Atoms offer more room in the body than their predecessors, the Atom LTs, for improved comfort, versatility, and freedom of movement.
Fitted Fit - This trimmer fit is patterned to stay close to the body through the chest, waist, hip, and thigh. Its low profile eliminates bulk, moves with the body, and fits comfortably over our first layers. This model's fit has evolved. Before you check out, please make sure to reference our sizing chart to determine your correct size.
Weight 280g / 9.9 oz
Fit: Fitted
Activity: Hike/Everyday
Technical Features
- Moisture-resistant outer face fabric
- Breathable
- Lightweight
- Compressible and packable
- Insulated
- 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
- Biocidal Disclosure - This model was treated with an anti-odour biocidal product (Active Ingredient: Silver Nitrate)
Zippers & Fly Configuration
- No Slip Zip™ front zipper
- Custom TPU zipper pulls are easy to operate and glove-friendly
Materials
- 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)
- French Regulation: AGEC Law - Article 13
- Origin of fabric: JAPAN
- Origin of dying: JAPAN
- May release plastic microfibres into the environment when washing
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