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  • Black color is made of merino wool and offers UPF 30 sun protection; Persian Red and Mint colors are 98% merino/2% nylon and offer UPF 25
  • Soft, nonirritating merino wool insulates, wicks away moisture and resists odors—naturally
  • Flatlock internal seams offer exceptional next-to-skin smoothness, and side seams wrap to front for a body-enhancing fit
  • Shaped bottom hem enhances fit
  • The women's Smartwool NTS Micro 150 T-Shirt for women does not itch and will not shrink; machine wash and dry


View all Smartwool Women's Hiking/Travel Shirts

REI membership


Best Use Hiking
Shirt Style Scoop
Fabric Merino wool
Sun-Protective Fabric Yes
UPF Rating 30
Moisture Wicking Yes
Sleeve Length Short Sleeve
Gender Women's

Size chart

Rated 4 out of 5 by from Love my smartwool tee! This is a great, lightweight, base layer tee. It dries super fast. I am 5'3" and 110lbs and I bought an XS. Length was just right. I like my shirts a little snug, but I could've easily gone with a Small as well.
Date published: 2015-03-19
Rated 5 out of 5 by from The best thing since sliced bread Up until this year, I only had one of these. I decided to get two more this year because I hated taking it off to wash it, even though that wasn't too often because it truly is unstinkable (at least in my case). When the weather turns cool, I wear this under my dress shirts for work and it is my sleep top. In between, I wear this to the gym and around town, under sweatshirts, flannel and jean shirts, and layer under cotton tees. During my first trip to Colorado this past summer, this layer never left my body, from cool mornings, hiking when it was in the 70s, then to sleep. I think you get the point. I don't throw mine in the dryer. I hang dry and it dries pretty quickly. I also have one tank top and one long sleeve. It really is the perfect layer and so versatile.
Date published: 2016-12-28
Rated 5 out of 5 by from worked great on a 90 degree day Material is thankfully thin, but seems durable. Was outside for 10 hours in temps reaching 92 degrees and was very happy with this shirt (Black). Definitely would like to see REI carry it in more colors! I'm 5'4", 115 lbs, muscular arms/back, thin stomach. Sometimes that has me in XS, sometimes S. Got the XS here; fits great.
Date published: 2015-08-20
Rated 5 out of 5 by from Perfect for backpacking I bought this shirt last year and absolutely love it. I only wear it to backpack. It's soft, doesn't chafe anywhere, covers my shoulders and arms so that my backpack/straps doesn't rub, and the best part is that it doesn't smell bad after 3 days on the trail. Even when my friends wear sport material tank tops on 80-90 degree high humidity days, they don't seem to stay as cool as I do in my wool tee shirt :-).
Date published: 2015-09-21
Rated 5 out of 5 by from Best hiking shirt! My husband bought this for my birthday in preparation for hiking the France. I have worn it almost everyday and temperatures have been in the 80s. It lives up to its description for moisture-wicking and odor-resistance. It is very, very comfortable. Like Darn Tough socks, these shirts will become my standard hiking gear.
Date published: 2016-06-29
Rated 5 out of 5 by from Warmth without bulk Comfy, air dries quickly, packs tiny, great for added warmth on a plane or anytime you need a little extra warmth without added bulk. Can wear many times before washing because it doesn't retain odor.
Date published: 2016-01-09
Rated 4 out of 5 by from Micro T-shirt I really like the shirt. It fits well, is soft and lightweight without being see-through. It can easily be worn by itself or as a base with other layers!
Date published: 2016-05-04
Rated 5 out of 5 by from Perfect T-shirt Slim sleek fit. It looks great with all the added benefits of wearing wool.
Date published: 2016-01-09
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what kind of weather can the shirt be wear? it is wool so would it be too hot if wearing in summer

Asked by: kongpansy
Wool shirts such as the Women's NTS Micro 150 T-Shirt can be worn in both cold and hot weather. Wool is temperature regulating, so it helps cool in the heat and helps you stay warm in the cold. It's also naturally anti-microbial, so it will not smell as bad as a synthetic shirt when you sweat.
Answered by: REIservice
Date published: 2016-06-29

Hi! This looks red in the photo but I see that the color is called "hibiscus." Is this a pink or red shirt? Thank you!

Asked by: atomsi
This color Hibiscus is more red than pink, and is true to the picture shown.
Answered by: REIservice
Date published: 2017-01-26

What is the length of a size M shirt? 

Asked by: ismiles
The back length of this shirt measures approximately 26 inches in a size medium.
Answered by: REIservice
Date published: 2016-09-24
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