Overview
The Patagonia Nano Air Hoody was released in July 2014 and was the best performing all-purpose active insulation jacket until the Arcteryx Proton LT Hoody came out in 2016. Our testers have put both of these jackets through the wringer. Many expeditions later, we are highly confident in our conclusion: the Arcteryx Proton LT Hoody offers the highest performance as an all-purpose active insulation jacket. It is more comfortable, has more durable fabrics, a tougher insulation, and more refined features. However, we suspect Patagonia will release an updated version of the Nano Air Hoody within the next year. Thus, we only recommend buying this version for a heavy-discounted price, i.e. 50% off.

Features & Specifications
- 13.5 oz (383 g);
- Two chest pockets, two hand warmer pockets, helmet-compatible hood;
- Highly breathable stretch insulation and fabrics.
Description of Field Testing
Max started using the Nano Air Hoody in July 2014 as an experiment to see if it could replace his R1 Hoody, which had gone mostly unused for a year because he switched to the Capilene 4 Hoody (it’s now called the Capilene Thermal Hoody). Wanting to own just one warm mid layer, and finding a greater appreciation for wilderness trips and alpinism than rock climbing, he found the R3 Hoody to be better than the Nano Air Hoody. The R3 kept him warmer, especially when wet, and it wasn’t hard to toss on a shell when the wind whipped hard or the snow started to fall. Max concluded the experiment in summer 2015, calling the Nano Air a luxury mid layer for alpinists and ski mountaineers.
In December 2015, Luc Mehl, who helped test the jackets on our comparative review, forced Max to reconsider his conclusion. Shortly into testing, Luc, a very avid ski mountaineer (he’s skiing from October to the end of May) and wilderness packrafter (in the unfrozen months), fell in love with the Nano Air. He nearly refused to use all other lightweight synthetic insulated jackets. He also found the R3 Hoody to be too warm for most hard-charging winter activities. Thus, Max resumed using the Nano Air and its competitors.
Now, after three and a half years, a suite of testers have used the Nano Air Hoody for a wide variety of applications and expeditions. Our photos below tell some of the stories.

Performance Assessment
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Discussion
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Companion forum thread to: Patagonia Nano Air Hoody Review
The Patagonia Nano Air Hoody was released in July 2014 and was the best performing all-purpose active insulation jacket at that time. Does it hold up to the current crop of insulated jackets?
On the chest pocket comment, I can fit an iPhone 8 Plus in a case in mine.
An iPhone 8 in a case is a tight squeeze in mine, but interestingly, it EASILY fits in the lighter Patagonia Nano Air LIGHT hoody…
FYI, Patagonia has already released the replacement/update – 1.5~1.6oz 30denier shell, and new elastic on the cuffs. Also the quilting pattern on the sides is changed/gone.
I picked up both in recent weeks. The new version shell fabric does feel slightly thicker. It is still extremely breathable; perhaps it has ever so slightly more resistance to my breath blowing through the fabric.
Important note: the fit is WILDLY different. I am 6’4″ 210# and the old style Large fits well (and XL was huge). On the new style, I’m firmly an XL. The new-xl arms are about identical to the old-large, and with the new-xl body slightly roomier than the old-large. I like the new cuffs better, they are tighter/slimmer. I notice that the new-version now says ‘slim fit’.
I hope you can update the review to be clear there are multiple options currently on sale.
A couple of the new colors are even on sale! (edit: looks like the old Hooded version is nearly sold out; they still look to have a bunch of the old non-hooded).
new:
old:
Cranking out those reviews Max! The insulation durability < shell durability is indeed a bummer. After the first year of this jacket being my go-to (cuz I loved it for everything) I lost about half the loft, and at 3 years I have a double layer Air Shed jacket. Something folks should consider for their wallet and plastic footprint.
Malcolm – WOW. Losing half the loft after a year and having the loft be completely gone in 3 is terrible.
“Insulation is not as durable as continuous filament insulations”: understatement of the year!
Yeah, I hear that…
To be fair, I used it a lot, kind of a ‘loved it to death’ situation. And washed probably once a week in winter so that my bike commute didn’t smell like sweaty skiing. I think I’ll follow Max’s lead to the arcteryx version though.
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