Light, packable and proven, the Atom LT – an Arc’teryx icon – is a performance warming layer for backcountry adventures, alpine ascents and downtown commutes. Refined for its next generation, we elevated its performance and extended its versatility. The Coreloft™ Compact 60 insulation retains heat when wet and withstands repeated packing and unpacking. The soft, durable 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
Insulated
Wind resistant
Versatile
Collar Configuration
Mid-height collar is insulated and fleece-lined, layers well
Construction
Performance stretch fleece side panels give ventilation
Resilient Coreloftâ„¢ Compact 60 insulation is breathable, warm, and light, performs if wet, and delivers loft retention that resists packing out
Light, soft Tyonoâ„¢ 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
Laminated hem
Slight drop hem
Patterning
Articulated elbows
Gusseted underarms for mobility and comfort
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 Zipâ„¢ front zipper
Custom TPU zipper pulls are easy to operate and glove-friendly




















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