Smartwool Microweight Bottoms - Women's


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Form fitting and designed with a wide waistband for the female figure, the Smartwool Microweight Bottoms for women are a lightweight long under legging perfect for aerobic activities in cold weather like skiing, snowboarding, nordic skiing and snow shoeing. Made from their lightest weight Microweight jersey knit merino wool fabric, these Smartwool bottoms will regulate temperature, wick away moisture and resist odor. Flatlock seams don't chafe or irritate and the UPF 30 sun protection shields your skin should you get warm enough to take off your shell pants.


  • Fabric: NTS Microweight 150 g/sq m; 100% Merino Wool; Jersey knit
  • UPF 30
  • Women's specific wide waistband for body enhancing fit
  • Flatlock seam construction eliminates chafing
  • Contrast color interior stitching and bartacks
  • Heat transfer logo at left hip
  • Machine wash warm, tumble dry low, or line dry for best appearance
  • Knit in Vietnam
  • Form Fit - Natural Rise
  • Inseam: 29.5 in, 75 cm (size M)

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Review Summary

4.5 out of 5

15 Reviews

  • Performance: 6
  • Build quality: 5
  • Great design: 4
  • Ease of use: 3

  • Cost: 4
  • Poor quality: 1
  • short: 1
  • Wears quickly: 1
Comfort: 5 / 5
Quality: 5 / 5
Warmth: 3.8 / 5
Fit: 3 / 5

15 Ratings & Reviews

Comfort: 5 / 5
Quality: 4 / 5
FitClothes: 3 / 5
Warmth: 3 / 5
from Pittsburgh, PA
45-54 yrs

Perfect base layer
November 10, 2010

I am very pleased with microweight bottoms in black color from Smartwool. I purchased encouraged by high quality of previously purchased socks... I highly recommend them for cold weather as a base layer or for lounging around house. My only complaint is they are shorter than ideal for me (I am 5'10" tall). Additional two inches of length would be perfect for me.

Pros: Build quality, Performance, Great value, Cons: short
Comfort: 5 / 5
Quality: 5 / 5
from PA
35-44 yrs

Great Quality
June 22, 2013

Very comfortable and typical high quality of Smartwool products. Great for wearing under ski pants on days that aren't too cold.

Pros: Build quality, Lasts forever, Performance
Comfort: 5 / 5
Quality: 5 / 5
FitClothes: 3 / 5
from So Cal, CA
35-44 yrs

Excellent Base Layer/Sleep Wear
April 11, 2013

I bought these for my trip to Morroco to use as sleep wear and layering for hiking in the desert. They were never too warm or too cold and did not stink. Plus my tush looked great.

Pros: Great design, Build quality, Performance, Ease of use, Great value

Comfy bottoms
January 10, 2009

Good fit, soft warm fabric, pretty purple color. I even wear them with boots and a skirt. Highly recommend Smartwool for, well, everything. Great quality, washes well. I avoid the dryer though.

smart wool microweight bottom
January 18, 2008

I was looking for a lightweight bottom to wear under my flight uniform. I loved the way the bottoms feel and they definitely keep me warm while I am loading patients either in the helicopter , airplane or ambulance. I was surprised that they tore very easily. I called Altrec to see about a return and they were very accomadating with the return process. While this product didn't work for me, I would like the company and how I was treated. Thank Kyle for your help!

Good purchase
June 10, 2010

I was afraid these would be too thin. But they actually have decent coverage and are very comfortable, with little itch factor.

Comfort: 4 / 5
Quality: 4 / 5
FitClothes: 4 / 5
Warmth: 3 / 5
from Killeen, TX
25-34 yrs

good product but not for winter
December 17, 2011

I bought this with the intentions of keeping me warm in the winter. When I realized that it was too thin and would not be able to keep me warm was when I decided to return the product and get something thicker. However I think it is warm during the fall but it will not be able to keep me warm during the winter.

Pros: Build quality, Ease of use, Cons: Cost
Comfort: 4 / 5
Quality: 2 / 5
FitClothes: 2 / 5

Surprisingly warm
September 11, 2012

These tights are really warm for what they are. They fit really snug and nice under a pair of pants too. Only complaint is they did not hold up well. I washed them in a washing machine and then air dried them. After a couple of wears they started getting holes and then one day i went to pull them on and they just ripped. I'm really disappointed about that. If they held up better they'd be my favorite tights.

Pros: Performance, very warm, Cons: Wears quickly, Cost, Poor quality
Comfort: 5 / 5
Quality: 5 / 5
Warmth: 5 / 5
from NY
25-34 yrs

amazing product
November 10, 2011

My fiance bought those Smartwool thermals for me and asked me to review them. This is a second time I buy this product, the last one hold for a year. And I have to say - these thermals are really amazing. They are warm, light and cozy. I can wear them under my jeans and feel very comfortable. I'm petite, but they are not too long to wear. I will definitely buy from this line again.

Pros: Great design, Build quality, Performance
Comfort: 4 / 5
Quality: 5 / 5
from California
25-34 yrs

Not too thin...Perfect.
January 13, 2011

I read quite a few reviews on these before buying them and almost went with the midweight because someone said they ripped theirs pulling them on which indicated to me they were very thin. They are thin but not as thin as I thought and you would really have to try hard to rip them. Perfect. Love em.

Comfort: 4 / 5
Quality: 4 / 5
FitClothes: 2 / 5
25-34 yrs

Ran Small
July 18, 2011

I love the smartwool microweight bottoms, but they ran a little small. I had to exchange the xs I bought for the smalls but other than that they are great.

Pros: Great design, Performance
Comfort: 5 / 5
Quality: 5 / 5
from Orlando, FL
25-34 yrs

Love Smartwool
December 29, 2010

I was looking for thermals that weren't too hot, light weight and warm. They are perfect to wear under my scrubs in FL. I plan on ordering a set of the midweight to take with me next month when I go snowboarding.

Pros: Build quality, Lasts forever, Performance, Cons: Cost

Too Scratchy!
January 29, 2010

I am sure the quality was fine but the wool even in a microlight was too scratchy for me!

Comfort: 4 / 5
Quality: 4 / 5

from Portland, OR
35-44 yrs

Comfy & Doesn't Hold Odor!
October 19, 2010

Wool just can't be beat in my opinion for moisture handling, comfort, and NOT holding odors. I wash these in cold and line dry and have had no shrinkage. Medium fit perfectly...I'm 5'5" and 128lbs. Great as leggings under a skirt too. I found the microweight warm and easy to wear under jeans, or as PJ's alone. They scrunch up pretty well for packing/travel too. Kept me warm on a 38 degree morning hauling wood. Wore a pair camping over the weekend, and everyday, and they did not stretch out. Maintained good fit and comfort the whole time. Highly recommended!

Pros: Great design, Build quality, Performance, Ease of use, Cons: Cost
Comfort: 5 / 5
Quality: 5 / 5
Warmth: 4 / 5
from Ontario
25-34 yrs

the perfect wool leggings
October 25, 2010

I have been looking for a pair of wool leggings for 2+ years now since I moved to Ontario. Just got these and they are (almost) perfect! Very thin and light, but not see-through. Can be worn outside for running, inside as lounge pants/sleep pants, or as underpants when it's really cold. Appropriate as tights under a casual sweater dress or skirt too. They were very slightly itchy- but just very very slightly- when I first put them on because my skin is fairly dry, not because I'm sensitive to wool. It didn't bother me, but I'm not sure if it might bother someone who is sensitive to wool. After washing they became even softer. The fit is true-to-size in my opinion. I am a size 0 regular, and the XS is a good fit. The waistband is also very comfortable- not too tight or loose. They will be very well used this winter. Highly recommended.

Pros: Great design, Ease of use, versatile

Also Available

Smartwool Women's Microweight Bottoms Photo

Black and Silver.

Available sizes, while supplies last, include size xs, size small, size medium, size large and size extra large: xs, s, m, l, xl.

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