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.
Performance stretch fleece side panels give ventilation
Light, soft Tyono™ 20 is air permeable
Design & Fit
Trim fit for base layer or light mid-layer use
Gusseted underarms for mobility and comfort
Zippers & Fly Configuration
No Slip Zip™ front zipper
Custom TPU zipper pulls
Cuff & Sleeves Configuration
Improved cuff construction increases durability, eases layering and removal
Dual lower hem adjusters
Slight drop hem
Internal chest pocket with zip
Two hand pockets with hidden zippers
Contains materials that meet the bluesign® criteria
Dope dyed lining fabric
DWR (Durable Water Repellent) finish repels moisture
Weight: 345 g / 12.2 oz
Fit: Trim fit, Hip Length, Centre back length: 74 cm / 29.1 in
Stretch fleece - 94% polyester, 6% elastane
Tyono™ 20 denier shell with DWR treatment - 100% nylon
Coreloft™ Compact (60 g/m² ) insulation. Highly crimped, multi-denier siliconized polyester yarn that has undergone a special process which reduces the thickness of the material by 50%, without reducing its insulation value by the same amount. Lightweight, breathable, thermally efficient 100% polyester fibre.