Nano-Air Light Jacket – Men's

When the pace is high and the temps drop, the Nano-Air Light is our go-to midlayer for trail runners and alpinists who can't afford to overheat. FullRange insulation breathes actively during hard efforts while still holding warmth when you slow down. It packs into its own chest pocket, so stashing it mid-run takes about five seconds.

• FullRange insulation vents excess heat during high-output efforts and holds warmth when you back off the pace
• Ultralight, stretch-woven face fabric moves with your body and handles light wind and moisture without stiffening up
• Packs into its own chest pocket — easy to stash mid-run, toss in a vest, or clip to a pack
• Slim, athletic fit sits close to the body and layers cleanly under a hardshell without bunching or adding bulk
• Available in Treeline Green, Ink Black, and Summit Blue — sizes M through XXL