Arcteryx Atom LT Hoody - Men's

Arcteryx Atom LT Hoody - Men's
  • Color: Nereus
  • Color: Black
  • Color: Orion
  • Color: Yukon
Please select options


Insulated, mid-layer hoody with wind and moisture resistant outer shell; Ideal as a layering piece for cold weather activities. Atom Series: Synthetic insulated mid layers | LT: Lightweight.

This product has a No Slip Zip™. The main zipper is equipped with “speed bumps” near the collar to avoid self-opening.

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 Polartec® Power Stretch® with Hardface® Technology, delivering stretch mobility and breathability. 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. In light precipitation, the Atom LT can be worn as an outer layer.

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 breathable side panels of Polartec® Power Stretch® with Hardface™ technology 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.

Technical Features

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


  • Composite construction
  • Breathable, stretch side panels for enhanced comfort and mobility


  • Articulated elbows
  • Gusseted underarms for mobility and comfort

Hood Configuration

  • Adjustable, low profile, insulated StormHood™

Zippers & Fly Configuration

  • Full front zip with wind flap
  • No Slip Zip™ front zipper

Cuff & Sleeves Configuration

  • Stretch-knit cuffs

Hem Configuration

  • Drop back hem
  • Laminated hem
  • Adjustable hem drawcord

Pocket Configuration

  • Internal chest pocket
  • Two hand pockets

Fabric Treatment

  • DWR (Durable Water Repellent) finish repels moisture

Part Numbers

Option UPC Store SKU
Nereus / Small 686487403031 JAC578552769
Nereus / Medium 686487403024 JAC562381749
Nereus / Large 686487403017 JAC57361859
Nereus / X-Large 686487403048 JAC573672349
Black / Small 686487332478 JAC459639088
Black / Medium 686487332461 JAC452433438
Black / Large 686487332454 JAC457153008
Black / X-Large 686487332485 JAC458189028
Orion / Small 686487403093 JAC567565429
Orion / Medium 686487403086 JAC56826749
Orion / Large 686487403079 JAC567839679
Orion / X-Large 686487403109 JAC569338699
Yukon / Small 686487403338 JAC558719479
Yukon / Medium 686487403321 JAC565797719
Yukon / Large 686487403314 JAC557461119
Yukon / X-Large 686487403345 JAC554605539
Yukon / XX-Large 686487403369 JAC571355719