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Light, breathable Nano-Air Light Vest delivers active warmth for everyday wear and movement
The Nano-Air Light Vest is built from recycled ripstop polyester with a DWR finish made without intentionally added PFAS, so warmth doesn't rely on a chemical shortcut. FullRange insulation, also made from recycled polyester, delivers lightweight warmth that breathes instead of trapping heat as conditions shift.
What Our Gearhead® Experts Are Saying:
"I feel the ripstop dump heat the second I push the pace, then hold it again the moment I slow down to catch my breath. The insulation stretches with every reach on a scramble, so it never feels like it's fighting me."
Details
- Lightweight insulated vest for hiking and everyday layering
- Breathable FullRange insulation balances warmth and mobility
- Air-permeable recycled ripstop is durable and packable
- DWR finish sheds moisture without the use of PFAS chemicals
- Zippered hand and chest pockets keep essentials secure
- Low-bulk design provides warmth without restricting movement
- Item #PATZAF4
- Responsible Collection
- Recycled/Repurposed, [material] Bluesign Approved
- Material
- 30D 100% recycled polyester stretch shadow ripstop, PFAS-free DWR treatment
- Insulation
- 40g FullRange (100% recycled polyester)
- Fit
- Regular
- Length
- Hip
- Pockets
- 2 zippered hand, 1 zippered chest
- Hood
- No
- Claimed Weight
- 7.5oz
- Manufacturer Warranty
- Lifetime
- Activity
- Casual, hiking
Patagonia
Nano-Air
Always On
Find Your Nano-Air

Nano-Air Ultralight
20g Insulation
A breathable, featherlight layer for nonstop alpine efforts.

Nano-Air Light
40g Insulation
Perfect balance of warmth and breathability for a range of conditions.
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Nano-Air
60g Insulation
Innovative, breathable insulation tuned for daily wear.
Inside The Nano-Air
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Match The Weight To The Day
Nano-Air's FullRange insulation comes in three weights, 20 to 60 grams, matched to how hard the day is working the body.

Durable Water Repellent Finish
Resists light moisture, without intentionally added PFAS.
Lightweight Features

Tuned For Comfort
FullRange insulation holds body heat while letting excess heat escape through the outer fabric. A microtextured liner pulls moisture off the skin and dries fast, keeping the layer from feeling wet or clammy through changes in effort.

Nano-Air Light
Steady warmth for cold-condition days spent moving at a steady pace. Twenty-gram FullRange insulation under the arms manages heat where the body runs hottest, so the layer stays on through changes in effort.

Microtextured Liner
The liner is lighter than the face fabric, pushing body heat into the insulation. It also has a bit of texture to resist sticking to sweaty skin.

Responsive Warmth
The 40g FullRange insulation holds heat when effort drops and vents it when effort rises, keeping pace with a route's changing demands.





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Buy Less, Demand More
Patagonia is a global leader in outdoor apparel, known for its unwavering commitment to environmental and social responsibility.
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