How to Choose Base Layers

Great for high-intensity activities like skiing, hiking and running, the women's Smartwool Classic Thermal Merino Quarter-Zip base layer top is made for cold-weather comfort when you're on the move.




$12
10% Reward
on this and every eligible full-price item*
+
$30
Bonus Card
valid for 60 days after joining*
=
$42
Value
Keep shopping
Imported.
View the Smartwool Classic Thermal Merino Product LineView all Smartwool Women's Base Layer Tops| Best Use | Multisport |
|---|---|
| Shirt Type | Partial-zip |
| Fabric | 100% merino wool (exclusive of decoration) |
| Moisture Wicking | Yes |
| Quick Drying | Yes |
| Underwear Weight | Midweight |
| Sleeve Length | Long Sleeve |
| Gender | 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 |
Measurements are stated in inches.
Adding a review will require a valid email for verification
Note: This is my 3rd 1/4 zip sweater. Just brought it home without trying it in a M, Grey Foggy Pattern. I also brought one home in Purple which runs large. This sweater in this color is EXTREMELY small. Several inches shorter than either this years sweater in Purple, or last years in Black. Very tight across the chest (I am a 36D so that is an issue). Will need to exchange for either a size L or perhaps this was a mismanufactured item? The inside is clearly stamped 'M'.
Normally, Smartwool has great quality and products. It fits well and I like the style. This pullover does not hit that high mark of quality. I've owned it a few months. The material piles and there are small holes developing in areas that get more contact. It feels like it's falling apart. I've purchased some other merino wool items from other manufactures that have much higher quality for about the same price. I hope Smartwool improves their products.
Thicker wool. Not itchy. Nice zipper. Fit is similar to past ones with quarter zips that I own. Usually wear medium and that's what fits. 5'4", 135 pounds
I've worn this every day since I bought it, with a brief pause for washing. It's super thin and warm, fits nicely under my ski jacket, and is great for freezing weather. I went with the 2X size so it looks nice with t-shirts and jeans/leggings (rather than using it as a thermal). The aqua color is true to the pictures, and I've just ordered the black because I like my first one so much. I'm going to use this for outdoor activities, dog walking, pilates, and general life.
Perfect as base layer or light sweater - keeps me warm, wicks moisture away, does not itch. Also, does not pick up odors.
Very lightweight and warm. I've worn with just tank top underneath my SmartWool 1/4 zip under my puffy jacket and was plenty warm to enjoy a hike or football game on very windy days.
Warm base layer, with good fit. Zipper is helpful to avoid over-heating.
Lovely color and was a perfect layer for my cruise to Alaska. I was at a perfect temp both inside the ship and outside on a zodiac ride.
I have had this same 'sweater' for over ten years ... two different colors, and now a replacement of one of them. It is warm, natural and very stylish also. It wears well and looks great - goes under clothing or is worn on its own. I am thankful they still make this sweater after all these years. At times I have thought I should buy five or six more IN CASE they ever stop making it so that I will always have one. That's how much I like it. Bottom line, I HIGHLY recommend this sweater.
Absolutely love my Smart Wool Quarter-zip Base Layer!! It is comfortable, performs quite well, and looks nice enough to double as a stand-alone shirt.