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- VersatileCollar Configuration- Mid-height collar is insulated and fleece-lined layers wellConstruction- Performance stretch fleece side panels give ventilation- Resilient Coreloft Compact 60 insulation retains loft- Light soft Tyono 20 is air permeableCuff & Sleeves Configuration- Stretch-knit cuffs- Cuff construction increases durability eases layering and removalDesign & Fit- Trim fit for base layer or light mid-layer useHem Configuration- Laminated hem- Dual lower hem adjusters- Slight drop hemPatterning- Articulated elbows- Gusseted underarms for mobility and comfortPocket Configuration- Two hand pockets with hidden zippers- Internal chest pocket with zipSustainability- Contains materials that meet the bluesign criteria- Dope dyed lining fabricZippers & Fly Configuration- No Slip Zip front zipper- Custom TPU zipper pulls