Arc'Teryx Atom LT Hoodie

Arc'Teryx Atom LT Hoodie


This trim hybrid hoody is designed as an active-use insulation layer, providing vital core warmth with liberal mobility and breathability. Lightweight and compressible, the Atom LT Hoody features Coreloft™ insulation in the torso, arms and hood. The side panels and underarms feature feature smooth faced, air permeable fleece stretch for ventilation. A wind and moisture resistant outer shell extends stand-alone usability.


Fact: Every person at Head Office owns at least one Atom LT; most of the women have two. 
The reason: Coreloft™ insulation inside a light taffeta shell. All the comfort of a sleeping bag, but it feels weightless. 


The benefit of taffeta fabrics is their light, airy nature with an ability to turn aside wind. The Atom series have a taffeta outer lining that is treated with DWR (durable water resistant) finish to give them a long-lasting ability to shed moisture. DWR protects against light precipitation.


Mid layers that can function as outer layers have varied degrees of weather shedding capability; they also have varied degrees of moisture management. In addition to being made of breathable Coreloft™ insulation, the Atom LT has smooth faced, air permeable fleece stretch side panels to help regulate temperature during exertion.


Highly compressible, Atom pieces pack down into a tiny parcel of stored warmth. Store the jacket inside its own pocket, or tuck it into a sleeve or inside the hood if you are not restricted by space. A quick shake restores the original loft, time and again.


  • Moisture-resistant outer face fabric

  • Breathable

  • Insulated

  • Lightweight

  • Compressible and packable

  • Wind resistant

  • Composite construction

  • Breathable, stretch side panels for enhanced comfort and mobility

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

  • Articulated elbows

  • Gusseted underarms for mobility and comfort

  • Adjustable, low profile, insulated StormHood™

  • Full front zip with wind flap

  • No Slip Zip™ front zipper

  • Stretch-knit cuffs

  • Drop back hem

  • Laminated hem

  • Adjustable hem drawcord

  • Internal chest pocket

  • Two hand pockets

  • DWR (Durable Water Repellent) finish repels moisture

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