Shipping Info:


Item #: 333060570

Warm weather is never a constant, even in summer. Fog rolls in, a sudden thunderstorm blocks the sun, and changes in elevation and levels of exposure can cause temperatures to suddenly shift. But summer conditions seldom require bulky insulation. The Atom SL Hoody is specifically created to hit the zone where insulation is required, but in a measured amount that suits milder conditions. Providing warmth comparable to a lightweight fleece for significantly fewer grams, the Atom SL is an efficient midlayer in cool conditions and a great standalone during rest breaks, early morning starts, and while enjoying the view from a freshly bagged peak.


  • Weather resistant
  • Breathable
  • Insulated and arc'teryx nu water repellent treatment
  • Low profile uninsulated stormhood™
  • Ultralight and shaped cuff with stretch fleece
  • Fleece stretch side panels allow for ventilation and drop back hem
  • Mesh lined sleeves provide next to skin comfort and two hand pockets with zippers
  • Trim and full front zip with chin guard and wind flap
  • Slim fit
  • Increases breathability during high output
  • Gusseted underarms for mobility and comfort
  • Adjustable hem drawcord


  • Mesh 100% Polyestercoreloft™ Compact 40 Insulation (40 g/m²)
  • Weight: 260 g
  • Centre Back Length: 74 cm / 29.1 Inch