Patagonia Nano Puff Bivy Insulated Pullover - Men's

Warmth without weight.

Every gram counts against you when you trek into the alpine for skiing and climbing trips, so be sure to have the Patagonia Men's Nano Puff Bivy Insulated Pullover packed away. This ultralight puffy uses Primaloft Gold Eco insulation to give the touch of warmth needed for active endeavors in cold places, and it's so compressible the jacket stows inside the front pocket for compact convenience on your harness or in your pack. Patagonia treated the pullover's tough, recycled ripstop shell to shed snowflakes and raindrops. The Nano's hood fits under helmets with ease, and the adjustable hem stays secure under harnesses. 

  • Ultralight packable pullover for alpine skiing and climbing
  • Highly compressible, water-repellent Primaloft Gold Eco insulation
  • Pertex Quantum Eco shell is windproof and water-resistant
  • Under-the-helmet hood and adjustable drawcord at hem
  • Jacket stuffs inside its own zippered pocket
  • Patagonia remains a leader in producing reliable and durable mountain clothing
  • Reviews
  • Q & A

Cant take it off. In a good way.

  • Size Bought: Large

Light and packable. Comfy. stylish. And usually my body is really good at regulating its temperature but I get very warm in this thing.

Great lightweight pullover!

  • Familiarity: I gave it as a gift but have feedback to share
  • Fit: True to size

I bought this for my very outdoorsy nephew and his new wife as a wedding present. They both love to ski, backpack, bike and camp and have used this jacket for all activities. Warm and lightweight. Perfect as a mid layer or go to jacket.

best yet

  • Familiarity: I've put it through the wringer
  • Fit: True to size

This might just be the best version of the Nano Puff yet. Years ago Patagonia made a similar Down Sweater version of this, and I've been waiting for it to come back ever since. The Nano Bivy has all the great lightweight/warmth/packability benefits of the regular Nano Puff, in a little bit different (and better?) style. The zippered pocket has lots of storage, and the main pocket is just like your favorite pullover hoody. I barely take this thing off all winter long...


  • Size Bought: XXL

Is XXL the right fit ?

Unanswered Question

I just received my patagonia mens torrentshell pullover. Its a size medium. Its a little loose and bunchy in the arms but I want that to layer.
I'm gonna order this patagonia nanopuff bivy pullover... should I get the small or medium? I will only wear a merino or light fleece underneath so dont want as roomy as my torrentshell medium fits... thanks

My sister loves this thing!

  • Familiarity: I gave it as a gift but have feedback to share
  • Fit: True to size

I gave this jacket to my sister as a gift as she prefers a mens cut to a women's but she absolutely loves the jacket. It is light weight and a great layer in her ski jacket quiver. Overall she says its her favorite jacket!

All the Warmth, None of the Bulk

  • Familiarity: I've used it several times
  • Fit: Runs small
  • Size Bought: Medium

If you're reading this, you probably know that Patagonia builds tough outerwear that is short on bulk and long on performance. The only issue with the Nano Puff Bivy is that it is cut one size smaller than it's sister, the Nano Puff Hoodie. Not a problem for me as I intend to wear mine as a second layer over a simple t-shirt, but if you want to layer more than a shirt underneath, definitely order one size up.

Bought as a gift

  • Familiarity: I gave it as a gift but have feedback to share
  • Fit: True to size
  • Size Bought: XL

He loves it! I have the women's version myself, and it is a great jacket. Nice to wear under a shell while skiing on cold days, or a great lightweight insulated jacket for a night on the town. My boyfriend usually wears a L or XL depending on the brand and I would say this is true to size compared to other Patagonia items he owns.

bivy pullover does run small

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: Runs small
  • Size Bought: m

I'm a female that does not care so much for the tapered lines in woman's clothing so i ordered the mens pullover. I'm ft 8 inches with a 34 DD chest. originally i ordered the mens small but it was very tight along the bottom. i get that it holds in warmth but the size medium gives me more movement and i just love it! will be my primary clothing piece on a trip to equador next week. it's more functional than the nano puff pullover because it has hand pockets and a kangaroo pocket with a hood. oh, and the zipper goes down to mid chest. spend your money on the bivy and you will be pleased.