Guest - Not logged in 

Reviews > Clothing > Jackets and Vests > Patagonia Nano Puff Pullover > Test Report by Jennifer Koles

Patagonia Nano Puff Pullover

Test Series by Jennifer Koles

April 5, 2010

Skip to my Initial Report- November 30, 2009
Skip to my Field Report- February 3, 2010
Skip to my Long Term Report- April 5, 2010

Personal Information

Name:  Jennifer Koles
Age:  35
Gender:  Female
Height:  5 ft 5 in (1.65 m)
Weight: 140 lb (64 kg)
Email address: jennksnowy at yahoo dot com
City, State, and Country: Orange County, California, United States

Backpacking Background

After getting into the outdoors scene camping while 4-wheeling and day-hiking, I switched to backpacking in the early 2000's. I have backpacked extensively in Utah, Wyoming and Idaho along with California, Pennsylvania and Nevada. I have slowly been cutting my base weight to be able to go longer in duration and distance. I have done so mainly by using better gear and dumping heavy luxuries. I backpack year round in all weather, and usually take a free standing tent and a gas stove on all my trips. I love trying out new gear.

The author

The author in the Narrows at Zion National Park, Utah.

Initial Report

November 30, 2009


Product Information and Description

Product: Women's Nano Puff Jacket
Manufacturer: Patagonia
Year of Manufacture: 2009
Manufacturer Website:

Listed Weight: 8.2 oz (232 g)
Measured Actual Weight: 9.35 oz (265 g)

Sizes Available: Women's x-small, small, medium, large, and x-large. Also available in a men's model.
Size Tested: Women's large
Measured Packed Size: 8 x 7 in (20 x 18 cm)

Available Colors: Black, Green Oasis, Seaport
Color Tested: Seaport

MSRP: $150.00 US
Warranty: Patagonia Ironclad Guarantee-"Your satisfaction is guaranteed. We make returns and repairs easy and full refunds are available for returned items that are unwashed and unworn."

Women's Nano Puff

Image courtesy of the Patagonia website.

The Women's Nano Puff is marketed as a wind/water-resistant pullover. That is very warm for its weight, super light, highly compressible, no frills, and can be worn as insulation or outerwear in cold climates. The manufacturer states that it is the most versatile piece of insulation they make.

The Nano Puff is a quilt type of pullover jacket. The PrimaLoft One polyester insulation is a single piece of insulation that is quilted to the exterior shell of the pullover. The (60 g) PrimaLoft One insulation is marketed as being able to trap heat with efficiency, even when wet. The shell is made of 100% recycled polyester (1 oz, 15 denier) and has wind blocking and moisture shedding properties with a DWR (durable water repellent) finish. The Nano Puff is recyclable through Patagonia's Common Threads Recycling Program.

The Nano Puff is definitely a no frills pullover. It has two zippers. One is for the main opening of the pullover that measures a generous 12 in (30 cm) in length. The other is for a left sided chest pocket that measures 5.75 in (17 cm) that runs lengthwise. This chest pocket turns inside out to serve as a stuff sack for the Nano. I was able to easily stuff the Nano in the stuff sack. There is a small loop inside the chest pocket to hang the pullover (when it is stuffed) on a clip or carabiner. The main zipper has a plastic pull tab on the zipper and the pocket zipper has a piece of cording attached to the zipper to make opening and closing the zipper easier. The collar stands 3 in (8 cm) above the main body of the pullover. The cuffs and the hem have elastic running through them to help prevent drafts. That is it for the design features of the Nano. Very simple.

Initial Impressions

I checked out the Patagonia website prior to receiving the Nano Puff. The website had images of the pullover and detailed information of the properties and the fabrics of the Nano Puff. The pullover looked nice on the website, but not as impressive as it is when I am holding it. It has a soft, silky shell and lining, and it is super lightweight. I can not get over how lightweight it actually is.

I received the Seaport color. I would consider this to be a medium to dark blue-green color. I think it is a beautiful color. The inner lining of the jacket is a pale shade of blue-green that complements the exterior shell color. I like the styling of the Nano; it is not boxy or bulky. The Nano fits me perfectly with just a little bit of extra room underneath to wear a layer of moderate thickness or two thin layers.

The fabric care instruction tag inside the pullover has the universal signs for fabric care and text stating not to use fabric softener. The Nano should be washed in water that is a maximum temperature of 30 C (86 F) on a very mild wash setting, no bleach, no iron, and tumble dry on low heat.

So far I am pleased with the Nano Puff. I have only worn it one time on a windy, chilly afternoon while rollerblading at the beach and I was comfortable and warm. I have no complaints yet with this jacket. But, I have yet to get it out into the field.

Field Report

February 3, 2010


Testing Locations

Mt. Woodson, California: The Nano Puff was worn here while rock climbing and included day-hiking, mild bushwhacking and belaying.

Mt. San Jacinto State Park, California: This was a backpacking trip with clear skies and sunshine. The high elevation was 9,000 ft (2,750 m). The low temperature was 17 F (-8 C).

Bommer Canyon, California: The Nano Puff was worn here for a full moon night hike with clear skies. We hiked 3 miles (5 km). The temperature was in the low 50's F (11 C).

Aliso Woods, Crystal Cove, Fullerton and Whiting Ranch California: Here the Nano Puff was worn before and sometimes after my mountain bike rides. The temperatures were in the 50's F (12 C) to the low 60's (16 C).

The Nano Puff was also worn on the beach path at Huntington Beach, California while fitness walking and rollerblading.

San Jacinto

Backpacking in Mt. San Jacinto State Park, California

Performance in the Field

Mt. Woodson

Rock climbing at Mt. Woodson, California

I have worn the Nano Puff in temperatures ranging from the low 60's F (16 C) to 22 F (-6 C). I have worn it with various layering combinations. For instance, on a recent backpacking trip the Nano was worn over a light silk base layer and a synthetic mid-weight Capilene layer. On this trip at around 23 F (-5 C) I found that I had to wear a shell over the Nano in order to keep me warm. I had the neck zipped up and I was not chilled. While hiking at night I wore the Nano with a light-weight wool base layer top. Before and after cycling I would wear it over a wool or synthetic cycling jersey.

On one of my night hikes and while hiking to climbing locations, I over heated in the Nano, even with the zipper open. I removed it and stored it in the storage pocket. I was able to easily store the jacket in the pocket without any struggle to fit it in there.

Sometimes I wish the Nano had hand pockets, especially at base camp. I know this would add extra weight and bulk to the jacket. I am learning to live without the pockets; I am just thinking it would be a nice feature. When I have the chest pocket full of odds and ends it gets kind of bulky and it looks weird. But, it is functional. The pocket is deep enough to hold items that I want to have accessible, quickly. Such as extra gloves, lip balm, snacks, tissues, and my MP3 player.

To me the Nano Puff appears slightly bulky at the bottom. But, it does not feel bulky at all. While wearing the jacket I have full movement of my shoulders, the sleeves do not ride up and they are a perfect length for me. However, when I am taking the jacket off, I feel as though I am limited with my shoulder motion and I have to squirm in the shoulder area.

I have washed and dried the Nano three times by following the care instructions on the tag. The jacket handled washing and drying well with no stretching or shrinking.

One of the quilting threads has come become unstitched at the thin wrist cuff. This tread has pulled out about 3 stitches. I am going to contact customer service about this issue. Since the tread started to come out at the cuff I am thinking this is a manufacturing defect as the cuff is not torn or damaged. I will just have to see what customer service says.

The Nano was worn in a light misty rain and was exposed to ground snow and water while at base camp. When exposed to light water the exterior appears to be wet while the inner lining remains dry. The jacket was not exposed to heavy rain or snow during the testing period as I did not want the jacket to wet out since it is not waterproof.

I am pretty impressed with the Nano Puff. It packs down small and gives me plenty of warmth down to about 23 F (-5 C) without needing a shell layer on top.

Long Term Report

April 5, 2010


Testing Locations

Mt. San Jacinto State Park, California: This was a snowshoeing day trip with windy conditions. The high elevation was 9,400 ft (2,865 m). The high temperature was around 48 F (9 C).

Orchard Hills, California: This was a night hike on Irvine Ranch Conservancy Land. The low temperature was in the 50's F (15 C). The Nano was worn here over a thin silk layer and a moisture wicking shirt. This was a 3 mi (5 km) hike.

Crystal Cove State Park, California: This was a hike along a trail on the beach in and out of the tide pools. The elevation ranged from sea level to 60 ft (18 m). The temperature was in the low 50's F (10 C). There was a misty rain at times. This was a 5 mi (8 km) hike.

Black Star Canyon and Maple Springs (Cleveland National Forest), California: The Nano was worn here after mountain biking. Lucky for me I had it in the car. The temperatures were in the 40's F (4 C). At Black Star Canyon it was misting rain and at Maple Springs it was raining lightly.

Orchard Hills

Orchard Hills, California: This was a night hike on Irvine Ranch Conservancy Land. The low temperature was in the 50's F (15 C). The Nano was worn here over a thin silk layer and a moisture wicking shirt. This was a 3 mi (5 km) hike.

Death Valley, California: The Nano was worn here in the morning and the evening while car camping. The elevation was approximately -180 ft (-56 m) and the low temperature was 49 F (9 C).

Performance in the Field

I contacted Patagonia customer support in regards to the pulled thread on the sleeve. The representative was friendly and helpful. I was told that it would take approximately 6 weeks to receive the jacket back from repair. I decided that I could easily stitch and reinforce the pulled thread. So, I bought some matching thread and stitched four stitches on the sleeve, and to this day it has held up well. Some of the other threads on the quilting are fuzzy, especially on the sleeves and the shoulders. The recycled polyester material of the Nano is not showing any signs of wear, even after rubbing against bushes and shrubs while hiking. I am concerned about the fuzzy threads. This makes me think the jacket is more delicate than the other jackets that I own. I have washed and dried the Nano following the care instructions about five times since receiving it and there are no signs of stretching or shrinking.

Since I have been wearing the Nano in temperatures in the upper 40's F (4 C) and in the 50's F (15 C), I have not missed the lack of hand pockets. However, I still think hand pockets would be a nice addition to this jacket, especially when it is worn in colder temperatures without a shell on top.

When I get too warm wearing the Nano, I stuff it in the chest pocket (that is a stow pocket too) and toss it in my pack. It is still very easy to stuff in the stow pocket, with no struggle at all. I wish all my jackets were like this.

The Nano is not waterproof; it is marketed as having a DWR (durable water repellent) finish. I hiked in a misty rain while wearing the Nano and it did not wet out. But, in a light rain it wetted out on the shoulders and the sleeves. It was raining lightly at Maple Springs while I was mountain biking and I was not smart in my clothing selection that day. I was cold because my socks, legs, and shorts were wet. I decided to change into something dryer after my ride before packing up my vehicle. I had the Nano in the car and I thought I would put it on to help warm me up. While packing up the car I started to feel wet on my shoulders and my arms. The Nano got wet all the way through in these areas. I wore the jacket home, wet; because I needed the warmth since my core was cold. When the Nano becomes wet the water does not seem to bead off even with the DWR finish. And I would not consider the Nano to have much of a wind blocking property. In a light breeze I could not feel the air penetrate through the fabric, however in a consistent wind or in wind gusts I could feel the air penetrating through the fabric.

During the long term report I layered silk and wool tops beneath the Nano and I was warm. While hiking uphill at Orchard Hills I became uncomfortably warm while wearing the Nano. I did not want to take it off because I knew I would be going back downhill soon. It felt steamy inside the jacket even with the zipper opened. After reaching the top of the hill it was dark and we had to hike back to our starting point. I was glad I did not take off the Nano as it was getting chilly. My clothes underneath the Nano were not excessively wet from sweating. There were a few damp areas, but that was it.

In the chest pocket I am still only placing a few small items in it. I do not like the look of the added bulk when I have larger items in the pocket. Generally I put my lip balm, a few tissues, and my MP3 player in the chest pocket.


I love the Nano! It is one of my favorite insulating jackets. One of my favorite features of the Nano is how light weight it is. It packs down small and is versatile enough to wear additional layers as needed to keep me warm. I like the cut and the styling of the Nano, and I just love the color. I get so many complements on this jacket when I am wearing it on the trail. Now, I would love it even more if it had hand pockets. I hope the Nano holds up for many years.

Things That Rock:

  • Lightweight
  • Fits perfectly
  • Comfortable
  • Packs small
  • Warm

Things That Are So-So:

  • A thread is undone at the wrist sleeve
  • The jacket is a little tight in the shoulder area when I am trying to pull it off
  • No hand pockets


This concludes my reporting on the Nano Puff Pullover. Thank you Patagonia and for providing me with the opportunity to test this product.


Nano Puff Stuffed


Read more reviews of Patagonia gear
Read more gear reviews by Jennifer Koles

Reviews > Clothing > Jackets and Vests > Patagonia Nano Puff Pullover > Test Report by Jennifer Koles

Product tested and reviewed in each Formal Test Report has been provided free of charge by the manufacturer to Upon completion of the Test Series the writer is permitted to keep the product. Owner Reviews are based on product owned by the reviewer personally unless otherwise noted.

All material on this site is the exclusive property of
BackpackGearTest software copyright David Anderson