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.

Redesign includes an update to the cuff construction for easier on/off and layering, an updated material package for enhanced durability, updated fit, and a dope dyed liner.

FULL PRODUCT FEATURES

Technical Features

• Moisture-resistant outer face fabric
• Breathable
• Insulated
• Lightweight
• Compressible and packable
• Versatile
• Wind resistant

Construction

• Performance stretch fleece side panels give ventilation
• Light, soft Tyono™ 20 is air permeable
• Resilient Coreloft™ Compact 60 insulation retains loft

Design & Fit

• Trim fit for base layer or light mid-layer use

Patterning

• Articulated elbows
• Gusseted underarms for mobility and comfort

Collar Configuration

• Mid-height collar is insulated and fleece-lined, layers well

Zippers & Fly Configuration

• No Slip Zip™ front zipper
• Custom TPU zipper pulls

Cuff & Sleeves Configuration

• Stretch-knit cuffs
• Improved cuff construction increases durability, eases layering and removal

Hem Configuration

• Laminated hem
• Slight drop hem
• Dual lower hem adjusters

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

Fabric Treatment

• DWR (Durable Water Repellent) finish repels moisture