How to Choose Base Layers
Smartwool Classic Thermal Merino Base Layer Bottoms - Women's
$81.73Compared to $115.00* Save 28%
Get out in the cold with more confidence than ever with these women's Smartwool Classic Thermal Merino base layer bottoms. They're 100% merino and 100% capable.
- 100% merino wool fabric made with an interlock knit for enhanced comfort, breathability, thermoregulation and odor resistance
- Flatlock seam construction designed to minimize chafing
- Fit allows for functionality while enhancing aesthetics for a range of body shapes
- Smartwool slim fit is intended to follow the contours of the body
- Closeout
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.) | Unavailable |
| Gender | Women's |
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
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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
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
Drlaurel
Asuncion, PY
Darn! Hate to write bad review on fave brand
3 years ago
But the mons pubis/cameltoe situation has to be dealt with. `I am not “pronounced” in this area either. This hugs in exactly the wrong spots and accentuates the area. Which is fine, under ski pants. But if you like to lounge, never take them off, like i do, i don’t want the mailman popping by with these puppies on. `I LOVE SMARTWOOL and their quality is incredible. But I’m finding better base layer fit at Woolx and they are the same cost and they can double as a legging which can be worn without TMI and double as a base layer. On this model, i love love love the flat panel that does not muffin top even skinny girls, the butt is cute, just get that crotch worked out and I’ll get all colours. By the way if you are between sizes S and M, im 135 but skinny/medium tall, The medium was the winner.
Age:45–54
Weight:125–150 lbs.
Height:5'6"
No, I do not recommend this product
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