photo: Patagonia Capilene Cool Trail Shirt short sleeve performance top


Price MSRP: $39.00
Historic Range: $39.00
Weight 150 g / 5.3 oz
Material Solids: 4.4-oz 100% recycled polyester spun jersey with HeiQ Fresh durable odor control / Heathers: 4.4-oz 100% polyester (50% recycled) spun jersey with HeiQ Fresh durable odor control
Attributes Fair Trade Certified sewn, bluesign approved
Price MSRP: $39.00
Current Retail: $26.99-$27.29
Historic Range: $19.50-$39.00
Weight 119 g / 4.2 oz
Material Solids: 4.4-oz 100% recycled polyester spun jersey with HeiQ Fresh durable odor control / Heathers: 4.4-oz 100% polyester (50% recycled) spun jersey with HeiQ Fresh durable odor control
Fair Trade Certified sewn, bluesign approved


Patagonia's Capilene Cool Trail Shirt is a great T-shirt for backpacking, hiking, and running in warmer seasons, and even in shoulder seasons for folks with a high metabolism. It is very comfortable, dries quickly, and doesn’t stink after a few days. In addition, this Patagonia Capilene fabric shirt is Fair Trade Certified and meets Bluesign sustainability criteria, and is now on the top of my T-shirt pile for hiking and other activities. The lightweight construction may wear faster than heavier t-shirts, and the trim fit means take care with the sizing.


  • Comfortable—feels more like cotton than polyester
  • Dries quicker than my polyester and Merino wool
  • Seams are comfortable and positioned well
  • No odor noticeable after “stink test”
  • Fair Trade certified
  • Bluesign criteria


  • Very lightweight—not for cool weather (It’s a T-shirt!)
  • Light wear beginning to show
  • No pocket (if you like that)
  • Size is just about right, but trim fit

NOTE: This is an “Initial Review” after a few weeks of testing...much more evaluation on wicking and stinking etc. to come as the real T-shirt weather comes and my sweat tests get serious!

20200125_115916.jpgI like to wear T-shirts most of the year until it really dips consistently below freezing. For me they are a good base layer top for everything but deep winter, as I generate heat really quickly and prefer only my torso to have full layers leaving the arms with less layers for additional venting. The Patagonia Capilene Cool Trail Shirt is now one of my go-tos after just a couple months of use.



The Patagonia sizing chart was quite accurate. They call this a "Regular" fit. Their Large size fit me (6'0"/183 cm, 170 lbs/77 kg) perfectly. The Cool Trail Shirt is available in five colors for men and women, and sizes XS to XXL for men and XS to XL for women. There's also a Long-Sleeved Capilene Cool Trail Shirt version.
20200307_171416.jpgThe Cool Trail Shirt torso length is enough to tuck in easily or keep loose.

20200308_164447.jpgSleeve length is good for me—just long enough, but not flopping loosely around. 

2020_0222_12101100-1-.jpgThe collar is fine—not noticeable and wears well under other layers. So far it hasn’t loosened from stretching etc.


The Cool Trail Shirt is very comfortable. Patagonia states this is "our softest performance knit," and I don't disagree.


Its fit is trim but allows room to move, and it almost feels as soft as cotton. The Capilene Cool Trail Shirt has a way better feel for me than most polyester type shirts, which I really don’t like although I use all the time. I like the feel of this shirt as much as my Merino wool T—the two are about the most comfortable tees I own, except for cotton, which of course never goes out on the trail with me.


The sewing arrangement leaves room for stretching. Above is a shot of the underarm. I have had no chafing or irritation under pack friction areas or anywhere else.

20200208_153029.jpgThis shirt is so light it can layer under anything and is almost unnoticed. I guess the best thing you can say about a T-shirt’s comfort is that I barely noticed wearing it and it never got in the way.

Breathability/Moisture Management:

The Capilene Cool Trail Shirt breathes very well. So far, I've worn it for hiking and backpacking in temperatures from 20s to 50s (degrees F).

20200125_134637.jpgI can dampen it with my high metabolism, either on a hike up my favorite local hill (1500-foot climb) or on the elliptical keeping fit between hikes.

In either case, and many more, the Capilene Cool Trail Shirt dried quickly and did not feel like moisture was sticking to me. See below for time-lapse photos of it drying:

2020_0214_12440100.jpgFresh off the machine and...

2020_0214_13233700.jpg45 minutes later...still see dampness but it doesn't feel damp much at all.

I really feel like the Capilene Cool Trail Shirt dries faster than my other regular hiking choices (an older polyester T-shirt and a Merino wool shirt bought to reduce stench). But that meant I had to “science” it up a bit...


I soaked all three shirts (Capilene Cool Trail Shirt, merino wool, and Coolmax poly) until they were all saturated.  Each was wrung out so almost no drips (three solid wringing each). 

20200308_104857.jpgI then laid them out to dry in the sun (on a 40-degree F day with light wind) and weighed them every ten minutes. (Older poly on left, Capilene Cool Trail Shirt in the middle, Smartwool on right.)

Here you go, proud backpacking nerds...
Tshirt_Drying.jpgApologies for the lack of labels...X axis is minutes, Y is percent of dry shirt weight. Note that the Capilene Cool Trail Shirt initially held less water than the other two, so started at a disadvantage with less moisture to lose (although that would be an advantage on the trail). They all steadily declined, but the Cool Trail Shirt reached almost dry conditions (both in weight and feel) within the hour, while the other two, although pretty good, still showed some extra weight and more importantly felt damp to me.


The Capilene Cool Trail Shirt has no real features—it’s a simple tee, which is perfect. No pockets or gimmicks to get in the way—just function.

20200308_102813.jpgThe lack of collar tag is really nice, just a simple hook you don't even notice. There has been no chafing or other irritation from wearing this shirt.

20200308_102911.jpgPatagonia put its logo in a minimal place at the bottom of the T-shirt.

I guess one negative is that the shirt does not have UV protection, but if I am in a sunny clime I will be in a long sleeve shirt and my sun hat (I prefer those to sunscreen). This shirt is so light you can throw on a long sleeve shirt in sunny areas and not even notice.

Sustainability is emphasized from materials through construction, which I really appreciate. The Capilene Cool Trail Shirt is made from 50 to 100 percent recycled content (100% for solid colors and 50% for heathered), is Fair Trade certified, and meets Bluesign criteria. I will not go into extensive detail on these, so feel free to go to the respective websites for the details on what this means.


20200125_130118.jpgAs usual this is my weakest category. It’s a T-shirt. Looks fine to me on its own or layered under a fleece or jacket.

The Capilene Cool Trail Shirt comes in a variety of colors (five each for men and women), so if you really like you could have one for every day of the week...almost.


This tee is listed at 5.3 ounces (150g) and my scale says 159 grams, so very close. Maybe the large is 9 grams heavier.

Stink Factor:

I have tried my best to make the Capilene Cool Trail Shirt smell and test the “HeiQ Fresh Durable Odor Control” which is said to be harmless to skin and last the lifetime of the shirt. Numerous hikes and even exercising on the elliptical for seven straight days without washing it...
20200126_161105.jpgafter that it passed the smell test with my wife just fine. 

20200214_124126.jpgNo other shirt I own could do that after that many days!

There are more tests to come as my high metabolism and the warmer weather combine to test the limits of this one!

Construction and Durability:

The construction seems solid. 

20200308_102925.jpgThe limited seams are well stitched and well placed with only one visible loose thread and no other issues. 

20200308_102846.jpgI do worry that the lightweight approach will mean it will wear faster, but if that is the case it is a sacrifice I would be willing to make to avoid that slick feel of a poly shirt.

I see a very small amount of piling when I inspect the shirt in the normal wear spots after a couple of months of heavy use.

It’s been too cold to use on its own so far, so no tests with twigs and branches pulling on it yet.

Care and Maintenance:

Washing is fabric softeners. I just throw it in with my regular laundry and there has been no change to the shirt or shrinking. I have line-dried it as well as thrown it in the drier on a light cycle with the rest of my outdoor clothes. No changes have been noticed. Patagonia's tag allows for washing, drying, and ironing (really?  iron your outdoor wear?). 


I have used this T-shirt when possible from January to March 2020. This includes mostly as a base layer in temperatures from the 20s to 50s degrees F. Weather ranged from sunny and 50s, rainy 40s, and snow and wind down to the 20s.

20200208_145521.jpgI can’t wait to really test it in the sweaty summer months!

Best For:

Patagonia's Capilene Cool Trail Shirt is good for anyone who wants a light, comfortable tee, that doesn’t stink over time and dries pretty quickly. It's a pretty good base for folks like me who heat up quickly and don't wear full base layers in the colder months as well. I recommend it for backpacking, hiking, running, and any other activity when a simple tee is your clothing of choice. There's a long-sleeved option too for cooler weather!


I have worn T-shirts since I was a child! Seriously, a short-sleeved shirt is standard for me until deeper winter weather as I prefer it over a full base layer. I have historically used poly shirts but got tired of the feel, and am also using a Merino wool T as an alternate—both have their pluses and minuses.

I have taken the Capilene Cool Trail Shirt on three weekend backpacking trips so far, numerous day hikes and local walks, as well as exercising almost every day on the elliptical.

Source: received for testing via the Trailspace Review Corps (Sample for testing and review provided by Patagonia)

About the Author

Phil May (FlipNC) is primarily a solo backpacker who enjoys wandering off trail as much or more than tromping down a trail. He frequents the mountains of western North Carolina and Virginia for many of his monthly trips, but can also be found wandering further afield a couple times a year. A preference for cold weather and rain may be due to being from Scotland, but certainly helps gear testing! He has been backpacking and hiking since the early '80s, and still enjoys scrambling around in the field, when he can get out of the office, in his day job as an environmental consultant. 


Great review and info, Phil! I'll be eager to see how it holds up in the southern heat and humidity.

18 days ago

7 consecutive days of exercising in the shirt without washing it and your wife let you stay in the house?! You're a brave man, Phil. Great review!

16 days ago

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