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Because otherwise, getting out of your sleeping bag on chilly mornings sucks.

Who likes getting out of sleeping bags in the morning when it's cold out? Nobody, unless you have the Patagonia Men's Nano Puff Insulated Jacket to ease the chill. With the recycled polyester exterior and PrimaLoft One insulation, your top half will feel like you never left your sleeping bag. Wear this Nano as your top layer on chilly backpacking mornings, and layer it under your ski shell for mid-winter storms. When it gets too warm, you can pack it down into its chest pocket and clip it to your pack or harness until you need to get hot and cozy again.

  • Ultralight recycled polyester has a DWR finish to repel water, and wind glides over its slick coating so you stay warm in cold conditions
  • Insulated with PrimaLoft One for warmth (even if the insulation gets damp) and compressibility
  • Jacket stuffs into its chest pocket, and pocket has a loop to hook to your carabiner
  • Dual-adjusted drawcord hem keeps cold out and heat in
  • Two hand-warming pockets and one chest pocket store small items

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Patagonia Nano Puff Insulated Jacket - Men's

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Here's what others have to say...

What temperature range do you think this jacket works best in? Also, can this jacket zip into an outer shell?

Best Answer Responded on


I am going on my second year using this jacket. The temperature rating is up to you as that really depends on what you are doing and your other layering. I have used this as everything from a casual jacket in 40-50 degree weather to a layering piece in sub-zero temps, while alpine climbing and backcountry skiing. This does not zip into an outer shell, but is very trim so you would have no problem fitting that under a shell. I have been nothing but please with this jacket so far. If you have any other questions or want to get an order set up, I would be more than happy to help!
Contact me at the info below

Dan Gates
Expert Gearhead
Office: 800-409-4502 ext. 4491

I am 6 foot and 160 pounds. I am debating whether or not I should get the medium or large. I don't want to be swimming in it, but I want to make sure it's long enough for my waist. What size would be best for me.

Responded on

I'd try a medium first if I were you. You're right on the cusp of needing a large for sure, but depending on torso length medium could fit just right if you're looking for a little more of a trim fit.

4 5

Light and Versatile

  • Familiarity: I've used it several times
  • Fit: True to size

This is a great jacket for when you're worried about a down jacket getting wet and losing insulating power. It looks great, and is so light that I forget I'm wearing it sometimes.
It does fit a little boxier than it looks in the photo, the sides go closer to straight down than the taper that you can see.

Unanswered Question

Can you please tell me the back length and sleeve length of a large vs an extra large? Thanks.

3 5

Arm length too long

  • Familiarity: I returned this product before using it
  • Fit: Runs large

Jacked feels boxy. Fit at body but too long for arms. Did not have similar issue with my down jacket. Returning it.

5 5

Nano puff = best jacket ever

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

Living in Northwestern Ontario and experiencing wild weather swings I have found this jacket to be extremely versatile. With nothing more than a tshirt or performance style undershirt I've worn this jacket out in conditions to -30 C and been perfectly comfortable. Incredibly lightweight, superb all around jacket that won't disappoint, can't wait to get my next one. I'm 6', 190 and broad in the shoulders and the Large is perfect, more of an athletic fit than not

5 5

On a scale of 1 to 10, this gets a 1,000

[review of both Men's and Women's nano-puff]. I'd pay double for this jacket. I bought this for my husband for Christmas last year. He wears it anytime it's below 50. He wears it under his ski jacket to keep toasty. He wears this cool summer nights. He wears it CONSTANTLY. I was so jealous of his jacket that this Christmas, I demanded the womens nano-puff. I wear it ALWAYS. I already had their down sweater. They are two completely different and both totally awesome coats but if I had to get just one, it would be the nano-puff no contest. The fit is flawless. It looks sexy on both men and women. Really flattering, nice enough to wear out to a more formal event as a coat (not too formal) and light as a feather. This is perfect in your pack on a day when the weather calls for -2 Lo and 36 High and you're just not sure? Throw this in your pack (or if you're like many embarassing ski dads, mine included, shove it down one of your jacket sleeves until you want to put it on...) Fits true to size, comfortable enough to sleep, ski, date and live in, easy to wash, warm as all heck. Patagonia nailed it with this one. Can I really only give it 5 stars?

Unanswered Question

bought a medium and its good everywhere except the lenght, was wondering the difference between the large and medium if its to much, im 5'10 and the medium barely is on my waist.

Just wondering if a large in this brand would be comparable to TNF or Columbia

Responded on

Fit here should be very similar to regular fit jackets from other brands.

3 5

wanted to like it

  • Familiarity: I returned this product before using it
  • Fit: True to size

weird, boxy fit. the size M sleeves were too short, and I was swimming in the L. cool colors and i like the material, but just didn't work out

In the picture the black and gray jackets look to be more form fitting vs the pictures of the other colors. Is this the case?

Responded on

Fit is exactly the same across all colors. Looks like on the grey and black they were put on body forms and then pinned back for some reason, definitely not the best representation of the overall fit.

Responded on

I agree with Ty. I have this jacket (its fantastic by the way) and it fits like a normal jacket would fit. Enough room to wear a t shirt, and vest underneath. The arms are a little longer (this is good for movement) and they are not bulky.

What is center back length of a medium?

When will you have Malachite Green in Large back in stock? I've been waiting to order one!

Responded on

Callaway J.,

We have a big order of Malachite Green in size large on the way. They should be available for purchase early-mid December.

5 5

If You Had To Pick One, This Would Be It

  • Familiarity: I've used it several times
  • Fit: True to size

I have the Patagonia Down Sweater as well. Although I love the functional aspect of that jacket, the fit is all wrong. This jacket is more of a trim fit, although the label states "Regular Fit". The jacket is really comfortable and the temperature regulation is just right. I've used this jacket in 40-60 degree weather and felt great all day long. If you're looking for a minimalist jacket for numerous activities, give this jacket a try.

Responded on

It's interesting that you describe it as a trim fit. I've always found this to be a bit generous in the mid section. In fact, that is my primary complaint -- because it is baggier than other offerings it takes more time to warm up all that air space. Other than the cut, I agree. This is a great jacket.

Responded on

I definitely agree that this is not a trim fit. I actually love the jacket but returned it due to how baggy it was in the mid-section.

Other than the fit, it is a great jacket

5 5


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

I wear this under my shell when night skiing at Brighton. I stuff this in my backcountry pack for cold summit transitions. I where this to the office and sometimes keep it on while at my desk. I'm 6'4" 200 lbs and ordered the large. Wish it was made in a long for times when bending over (the hem can right up), but it is manageable. The XL fit too loose around the torso and not much noticeable length. Love the integrated stuff sack too. No hood is great for layering.

5 5

Worth the Price

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

I got this jacket as a gift for my old man. It is way more than either of us would ever spend for a jacket, but we had several friends who have had the nano puff for forever, so we knew they last a long time.

He absolutely loves it! He wears a size Medium in everything (6', 170 lbs), and the Medium was just perfect. It can be stuffed into its pocket, although we usually just stuff it in to the backpack around all the other stuff - it is very packable and light.

We are in Southern California, so it never really gets super freezing, but it has always kept him warm, sometimes layered with a t-shirt and flannel underneath. It's great for around town, around camp, or on the crag.

I want one for myself now too!

Unanswered Question

Where can I find the old Nano Puff. I...

Where can I find the old Nano Puff. I really dislike the new longer sizing.

5 5

Best Synthetic Jacket Around

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

I've worn the nano puff for about 5 years now and I just purchased me second one. The first one worn out after 4 and half years of heavy use and I couldn't have been more pleased with it. This jacket is way better than true down in my opinion because it can get wet and still maintain its warmth. If you wear this jacket in the rain, yes you will get and yes you will eventually get cold but if your running an errands and its suddenly starts raining you'll be fine and stay dry. If this were down it would get wet and ineffective in a heart beat. Its also crazy thin so you can layer your shell on top of it without issue. That's another thing about down, its bulky. This jacket is also wind resistant which is really nice and a huge advantage over fleece. Yes the price is high but with Patagonia you're buy a high quailty product that's going to last so you need to view it as an investment. The nano puff is a solid warm jacket that is functional as both a technical piece and a casual jacket. Definitely worth the big bucks!

5 5


  • Familiarity: I've used it several times
  • Fit: True to size

This jacket packs a lot of warmth for it's size. Given a few layers underneath, I would trust it on any day above freezing. Serious bang for the size.