Redesigned heel collar for improved comfort

thermoregulation

The HRM 200 monitor comes with a user-replaceable battery and gets up to 1 year of battery life

5oz (212g)

Size & Fit

Arc'teryx Men's Atom Jacket Black size:XL Redesigned heel collar for improvedX000009561 002291 Everything you love about the Atom Hoody (minus the hood), the Atom Jacket is the layer you can count on to see you through multiple high output activities. Wear it solo for chilly forest hikes with windy summits, climbing at the crag and hanging at the campsite, or as a midlayer for touring and wet winter objectives. The Coreloft synthetic insulation stays warm even if you run into light weather, making it a better alternative to