When the climb turns into a full-cardio grind, most insulation traps too much heat. The Men's Nano-Air Light Hoody is built for the highest-exertion mountain athletes and objectives — a stretchy, air-permeable midlayer you can leave on from the approach through the crux without overheating, then keep zipped when the pace finally eases at the belay.
The hoody pairs a 1.6-oz 30-denier 100% nylon stretch ripstop shell with a 2-oz 100% nylon stretch plain-weave liner over 40-g FullRange 100% polyester stretch insulation. Together they deliver excellent mechanical stretch and 70 CFM air permeability. An engineered pattern eliminates all seaming across the shoulders and back, removing abrasion points, while a DWR (durable water repellent) finish helps shed snow and light moisture.
Standout features:
- Pullover silhouette — deep center-front zipper for quick venting and easy on-off
- Stretchy bound hood — pulls on or off easily even when the jacket is zipped
- Left-chest zippered pocket — secure exterior stash for essentials
- Shaped stretch-woven cuffs — 88% polyester/12% spandex, seamed to reduce bulk under layers and push up without constricting
- Seamless shoulders and back — engineered pattern cuts abrasion points and boosts stretch
- Featherlight warmth — 10.9 ounces, 75% more breathable and 33% less insulative than the regular Nano-Air Hoody
Reach for it on high-output objectives — alpine climbs, ski tours, fast-and-light approaches and cold-weather trail runs — where breathability matters as much as warmth. It also layers cleanly under a shell as an active midlayer when temperatures drop and the effort stays high.
The details
- Shell: 1.6-oz 30-denier 100% nylon stretch ripstop
- Lining: 2-oz 50-denier 100% nylon stretch plain weave
- Cuffs: 4.7-oz 88% polyester / 12% spandex stretch-woven
- Insulation: 40-g FullRange 100% polyester stretch insulation
- Finish: DWR (durable water repellent) on all fabrics
- Air permeability: 70 CFM
- Weight: 10.9 oz
