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This product is no longer available, but don't go just yet.


  • Lightweight and compressible, the Atom LT features Coreloft™ synthetic insulation in the torso, arms and hood
  • Polartec® Power Stretch® with Hardface® side panels and underarms increase range of motion and breathability
  • Durable Water Repellent outer shell finish extends stand-alone usability
  • Scuba-style hood fits under a helmet
  • Front zipper features an insulated windflap
  • Gusseted underarms and articulated elbows ensure a good fit
  • Laminated hem drawcord and stretch-knit wrist gaskets hold in warmth
  • Handwarmer pockets and 1 internal pocket
  • Hip length with droptail hem; trim fit maximizes heat retention


View all Arc'teryx Men's Synthetic Insulation Jackets

REI membership


Best Use Multisport
Insulated Yes
Insulation Type Synthetic
Insulation Coreloft polyester fibers
Hood Yes
Gender Men's
Shell Lining Fabric Ripstop nylon
Average Weight 13.2 ounces
Shell Fabric Ripstop nylon

Size chart