How to Choose Base Layers
Smartwool Classic Thermal Merino Base Layer Bottoms - Women's
$115.00
Update your cold-weather kit with tights that adapt to your activity. Smartwool Classic Thermal Merino base layer bottoms offer cozy warmth for stop-and-go activities and feature an improved fit.
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- Merino wool helps maintain comfort whether the climate is warm, cold or in between; interlock knit enhances comfort, breathability and natural odor resistance
- Fit updated to improve functionality while providing a streamlined look; new side seams and curved back seam reduce sag and excess fabric
- Merino-covered elastic waistband
- Chafe-free flatlock seams enhance comfort
Imported.
View the Smartwool Classic Thermal Merino Product LineView all Smartwool Women's Base Layer Bottoms| Best Use | Multisport |
|---|---|
| Fabric | Merino wool |
| Moisture Wicking | Yes |
| Underwear Weight | Midweight |
| Inseam (in.) | 30.5 inches |
| Gender | Women's |
| Sustainability | Contains ZQ merino wool |
Smartwool Clothing - Women's
| XS | S | M | L | XL | 1X | 2X | 3X | 4X | |
|---|---|---|---|---|---|---|---|---|---|
| Numerical Size | 0 - 2 | 4 - 6 | 8 - 10 | 12 - 14 | 16 - 18 | 16 - 18 | 20 - 22 | 24 - 26 | 28 - 30 |
| Chest | 32 - 33 | 34 - 35 | 36 - 38 | 39 - 40 | 41-42 | 43 - 45 | 47 - 49 | 51 - 53 | 55 - 57 |
| Sleeve Length | 27 - 28 | 28 - 29 | 29 - 30 | 30 - 31 | 31 - 32 | 31 | 31 | 32 | 33 |
| Waist | 24 - 25 | 26 - 27 | 28 - 30 | 31 - 32 | 33 - 34 | 39 - 41 | 43 - 46 | 47 - 50 | 52 - 55 |
| Hip | 35 - 36 | 37 - 38 | 39 - 40 | 41 - 42 | 43 - 44 | 45 - 47 | 49 - 51 | 53 - 55 | 57 - 59 |
| Inseam | 29 - 30 | 30 - 31 | 31 - 32 | 32 - 33 | 33 - 34 | 30 - 32 | 30 - 32 | 30 - 32 | 30 - 32 |
Sizing Notes
Measurements are stated in inches.
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Most Helpful Favorable Review
Exceeded Expectations for Warmth
monica76734 years ago
I've heard merino wool is warm/good base layer (from other reviews, etc.) - finally bit the bullet because these were on sale (Labor Day - but still a heft price). However, I would say these have absolutely exceeded my expectations!! I am "cold blooded", so run colder than most. I use them as a base layer for sleeping in a 0°F bag and am nice, toasty warm =) (so far down to 25°F) I also use them as a base layer for hiking (again, around 25°-35°F, but wind chill about 10°F) and my body stayed warm. It was my hands/face that were chilly. definitely an upgrade to my Under Armor Heat Gear I bought about 5yrs ago...will be officially swapping these out. And even with working up a sweat while hiking (Mt Elbert), these truly are "breathable", dried super quick. I also found these to be soft and comfy (not itchy). Once thing I would say - they are not like "leggings" and stay hugged to you all day. They did stretch out a bit, which I actually liked!! I normally wear mediums in other brands (thicker thighs, butt) - but a small worked perfect, especially since they stretched out a bit. To me - they were worth the cost/purchase! Also bought a merino wool top - about to leave the same review there, the duplication is not an error, lol!
monica7673
Denver, CO
50 people found this review helpful
Most Helpful Critical Review
Buyer beware
Kels5 years ago
These pants are pretty comfortable and keep me warm without making me feel overheated. But today I went to adjust them and my thumb went through the fabric... and not at a seam either. I've only owned them for two months and wore them about 2x a week.
Kels
CA
117 people found this review helpful
Customer Images
alice0121
Vermont
Not a quality Smartwool product
2 years ago
I love Smartwool anything, I buy their socks every year and I love their merino wool tops, hats, etc. However, these thermal bottoms are not the quality I'd expect from Smartwool. Just barely over 2 years into having these (and I haven't worn them very much, around 20-25 times) they have the most insane runs in them right in the crotch/bottom area. I never wear these bare or sit on rough surfaces, I always have my snow pants over them, so I can't understand why they look like panty hose runs. They're so fragile for how expensive they are, absolutely not worth it and Smartwool only covers within 2 years of purchase. I honestly think the problem is the material blend they're using for this, it should blended with something more durable. Truly disappointing.
Age:25–34
Weight:125–150 lbs.
Height:5'7"
No, I do not recommend this product
Jasmine Z
St. Louis, MO
These are awful
3 years ago
[This review was collected as part of a promotion.] I was so excited for these and now I am so disappointed. I bough them last February and wore them once or twice before the weather warmed up. Now that it's cold again, I am wearing them again, but they are already falling apart. I have wore these pants a total of four times and washed them once (inside out, in a wash bag, with nothing to snag on) and there are SIX HOLES in the legs and the thighs have a bunch of pilling on them from my thighs rubbing together. These were really really expensive for leggings that didn't even last four wears and one wash without becoming completely damaged. These are the worst.
No, I do not recommend this product
Originally posted on smartwool.com
Response from smartwool.com
smartwoolpwr
2 years ago
Hi there, thank you for sharing your experience with us. Each season, we work to improve product offering, comfort, fit and durability on all products. We're sorry to hear this product didn't work out for you .We want to let you know that this issue is definitely out of the norm for Smartwool. Thankfully, all of our products are backed by our Go Far. Feel Good.™ Guarantee. You can find all the details about our Guarantee here: https://www.smartwool.com/discover/smartwool-guarantee.html
Kels
California
Buyer beware
5 years ago
These pants are pretty comfortable and keep me warm without making me feel overheated. But today I went to adjust them and my thumb went through the fabric... and not at a seam either. I've only owned them for two months and wore them about 2x a week.
No, I do not recommend this product
nicnoc
Boston, MA
I LOVE these pants
4 years ago
These pants were my first Smartwool purchase (along with the 250 Base Layer top) and I LOVE them! I got these on sale and regret not having bought a second pair. I've been wearing them non-stop, pairing them with a down skirt on top (in- and outside the house) or under bike pants (have not yet tried them under jeans) in cold Boston winter. Even after days of wear they pretty much hold their form (aside from a bit of stretching) and after a wash (machine but air dried) bounce back to original form. I also have a pair of mid-weight Merriwool layers and they do not hold their form. They are warm, wick sweat quickly, and truly don't smell. I love them!
Age:35–44
Weight:125–150 lbs.
Height:5'7"
Yes , I recommend this product
Addie
Hudson Valley, NY
Classics for a reason - just about perfect
9 months ago
This is my third pair of heavy weight Smartwool bottoms. They fit well, are warm, and last a very long time. I’m 5’8” 140lbs middle aged and have a bigger butt and thighs. The mediums fit perfectly, with enough space and stretch to comfortably move around in. The wide waistband doesn’t dig in and they stay put. They are super warm, like soft sweaters for your legs. And lastly, at approximately 10 year old, my oldest pair are thinner and are quicker to stretch with wear, but they are still warm and get a lot of use. They have developed a few tiny holes that haven’t run. I just wish for more colors!
Age:35–44
Weight:125–150 lbs.
Height:5'8"
Yes , I recommend this product
Sand
Southern California
Didn't last 9 mos
2 years ago
Sides of the inner thighs started rubbing down and thinning around 7 months, it's just a year now and I have gaping holes all along the sides. Poorly or cheaply made, paid $100 and didn't even last 9 months.
No, I do not recommend this product
PNW Crew
Seattle
Hoped for better
3 years ago
Having moved to the Pacific Northwest just as winter arrived, I was looking to bolster my cold weather wardrobe. Wool is my preferred fabric, so I was pleased to find this base layer, albeit a little pricey for my taste. I bought a top and bottom. They are thin and so they fit well under my usual garb, but I was underwhelmed by the warmth offered. I've owned other base layers that were a little heavier in weight but a lot warmer. They also attract every speck of lint and hair in the vicinity. It's not a performance issue, but is an annoyance for sure. For the price, I give this product a resounding "meh." For what it's worth, the length was just right for me, I'm 5'-4."
lydmo119
York, PA
Absolute Lifesaver
2 years ago
So I bought these for a my winter trip to Iceland to layer up with and they were perfectly cozy. Not only did they keep me warm but I’m convinced they saved me from being torn to shreds in an accident I ended up having in Iceland after falling down a icy, jagged rock covered cliff. My waterproof layer was basically ripped from my body, my thermal pants were gashed and torn. These leggings remained pristine. Not so much as a small snag, which in turn meant my skin was also left from being absolutely destroyed. Can’t say the same for my upper torso, arms and hands. Maybe it was sheer luck, but they truly were a life saver.
Age:25–34
Weight:175–200 lbs.
Height:5'9"
Yes , I recommend this product
Naturdoc
Vancouver, WA
comfortable but not warm.
3 years ago
i like that these are 100% wool and I like to encourage that trend. They are not scratchy, but they are also not really thick enough. Though they make a comfortable base layer, but they are not really warm. I wore them in 30 degree weather on a 3.5 mile snow hike under some snow/winter pants (EddieBauer) that are not insulated. I could feel the cold through the pants and wool base layer. my butt was cold. maybe this would be a good layer to wear under powder pants. Not warm enough for what i was hoping to use them for. I got more warmth from $10 fleece leggings from Fred Meyer.
Age:45–54
Weight:100–125 lbs.
Height:5'6"
Yes , I recommend this product
Ashley
Vancouver, WA
Doesn't hold up
4 years ago
Purchased in Nov 2019 and used for winter season for hiking/walking in cold or for under my snowpants. Was not rough with them. Went to pull out for 2020/2021 winter season and there were multiple holes that had formed in the seat/groin seam area. Super soft and pretty warm but apparently not durable enough for average wear.
Age:25–34
Weight:125–150 lbs.
Height:5'5"
No, I do not recommend this product
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