Patagonia Nano Air Longevity

I have a first year’s production of the hoody (2017?) as well as the vest. Unfortunately I can’t tell you how much loft it has lost or not because I don’t have access to a new one, but I wouldn’t say degradation has been noticeable. There may is some slight loss of loft on the back of the hoody where I have it compressed sitting at a desk or compressed under a pack, but I haven’t noticed a considerable loss of warmth because of it. Compared to my Nano Puff, it has maintained loft waaaayyyy better, and the face fabric has really held up over the years with zero pilling.

Personally I find the hoody too warm to use for any 3 season backpacking as an active insulation piece, and too heavy to use as my static insulation. The vest has seen some time on backpacking trips, but unless its going to consistently be in the 30-40s during the day, I am fine with my alpha hoody and a windshirt + down jacket for camp. I can see a use case for winter where daytime temps are consistently below freezing. I use the pieces to resort ski in any of the Sierra and Rockies, XC ski and winter hike in MN, and the hoody gets used casually a lot in my city life. They are incredibly comfortable, but just not as versatile for backpacking as I would have hoped when I originally bought them.

My 2017-era Patagucci nano air puffy hoody-thingie (the name always confuses me) is still viable for how I use it, as a “active insulation” layer for cold/winter hiking. It’s retained its warmth, even though the fabric shows signs of wearing through in places. But I agree with above it’s a little too warm to really use while working hard uphill, even if the temps are around freezing. But it’s nice to pull it out for the downhills.

I find nearly all the so-called “active insulation” way too warm (for uphill travel) unless it is 20 degrees or lower.