| What it is | Active-insulation jacket (Patagonia) |
| Insulation | FullRange (stretchy, breathable) |
| Strength | Wear-it-all-day breathability + stretch |
| Trade-off | Less peak warmth/wind resistance |
The Patagonia Nano-Air is an active-insulation jacket built around Patagonia’s FullRange insulation and stretchy, air-permeable fabrics, designed to be worn continuously during high-output activity. It dumps excess heat and moisture so you stay comfortable on the move without constant layering changes, trading some peak warmth and wind resistance for outstanding breathability and stretch.
Built to move
Patagonia’s take on active insulation (cf. Polartec Alpha); the static counterpart is the Nano Puff.
Frequently asked questions
What is the Patagonia Nano-Air?
The Nano-Air is Patagonia's active-insulation jacket, using its stretchy, breathable FullRange insulation and air-permeable fabrics so it can be worn nonstop during aerobic activity. Instead of trapping all your heat like a static puffy, it lets excess heat and sweat escape, keeping you comfortable as your effort level changes.
What does 'active insulation' mean for the Nano-Air?
It means the jacket is designed to be worn while you're working hard, not just at rest. Its high breathability and stretch prevent the overheating and clamminess you'd get from a regular puffy during a climb or skin track, so you stop fiddling with layers and just leave it on.
Nano-Air vs Nano Puff?
The Nano-Air is breathable, stretchy active insulation for on-the-move warmth during hard effort; the Nano Puff is a static synthetic puffy optimized for warmth retention at rest and packability. Pick Nano-Air for aerobic, variable-output use and Nano Puff for stop-and-go warmth and stuffing in your pack.
Sources
- Nano-Air — Patagonia
- Active insulation — The Mountaineers