![](https://www.finalflight.net/prodimages/9357-DEFAULT-l.jpg)
Our warmest baselayer. Works as a single layer in cool weather or as a baselayer in cold weather Features Slim Fit Interlock knit 10 (25 cm) center front zipper Shoulder panels eliminate top shoulder seams Flatlock seam construction designed to eliminate chafing Knit in Vietnam: 100% Merino Wool
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Smartwool SW016373001XS Women's Merino 250 Baselayer 1
Womens Thermal Merino Base Layer 1/4 Zip
If you take your base layer game seriously (and you should), the Smartwool Intraknit Merino 250 Thermal 1/4 Zip Base Layer Top is the holographic
![](https://images.evo.com/imgp/700/157758/945129/smartwool-intraknit-merino-250-thermal-1-4-zip-.jpg)
Smartwool Intraknit Merino 250 Thermal 1/4 Zip
![](https://www.rei.com/media/5db16c9a-148f-44f5-94f9-41508242d2a3.jpg?size=576x768)
Smartwool Merino 250 Base Layer Quarter-Zip Top - Women's
Smartwool's best selling, and warmest, base layer, just got a little more refined with an improved fit, chafe-free seam construction and panels that
![](https://elkmonttradingcompany.com/cdn/shop/products/download_3_e2a2c104-ce85-4eba-b24c-a1f9c0928451_2000x2000.png?v=1633385065)
Smartwool Women's Merino 250 Base Layer 1/4 Zip
![](https://res.cloudinary.com/bobstores/image/upload/w_1000,q_auto,f_auto/dpr_2.0/2069286_510_main.jpg)
SMARTWOOL Men's Merino 250 Base Layer 1/4-Zip Pullover - Bob's Stores
Smartwool Men's Merino 250 1/4 Zip Baselayer Top
![](https://content.backcountry.com/images/items/900/SWL/SWL01KV/BK.jpg)
Smartwool Merino 250 Baselayer 1/4-Zip - Men's - Clothing
Fit and Design: Slim fit baselayer topFit updated to improve functionality while enhancing aesthetics for a range of body shapesClassic, comfortable
Smartwool Women's Merino 250 1/4 Zip Baselayer Top
![](https://res.cloudinary.com/eastern/image/upload/w_1000,q_auto,f_auto/dpr_2.0/2069346_501_main.jpg)
SMARTWOOL Women's Merino 250 Base Layer 1/4-Zip Pullover
![](https://www.backcountry.com/images/items/1200/SWL/SWLZ86W/NEBLHEDENA_D2.jpg)
Smartwool Merino 250 Baselayer 1/4-Zip - Men's - Clothing