Men's Classic Thermal Merino Base Layer 1/4 Zip
![](https://cdn.shoplightspeed.com/shops/614969/files/59210611/650x750x2/smartwool-mens-classic-thermal-merino-base-layer-1.jpg)
The men's Classic Thermal Merino Base Layer 1/4 Zip is one of Smartwool's heaviest base layer tops and a great choice for cold weather activites.
![](https://jhoutdoors.com/cdn/shop/products/SW016719K41_2D1_2Dp.jpg?v=1687327376)
Women's Classic Thermal Merino Base Layer 1/2 Zip Hoodie Smartwool – J&H Outdoors
![](https://cdn.shoplightspeed.com/shops/632657/files/60164319/800x1024x2/smartwool-womens-classic-thermal-merino-base-layer.jpg)
Women's Classic Thermal Merino Base Layer Colorblock 1/4 Zip - The Benchmark Outdoor Outfitters
![](https://killingtonsports.com/cdn/shop/files/Smartwool-Womens-Classic-Thermal-Merino-Base-Layer-14-Zip-Lead-Heather-2.png?v=1694183950)
Smartwool Women's Classic Thermal Merino Base Layer 1/4 Zip
Smartwool has updated the fit of the Men's Classic Thermal Merino Base Layer 1/4 Zip to improve functionality while also enhancing aesthetics. As one
![](https://killingtonsports.com/cdn/shop/files/Smartwool-Mens-Classic-Thermal-Merino-Base-Layer-14-Zip.jpg?v=1696373993)
Smartwool Men's Classic Thermal Merino Base Layer 1/4 Zip
![](https://content.backcountry.com/images/items/large/SWL/SWLZ8C0/LEAHEA.jpg)
Smartwool Classic Thermal Merino 1/4-Zip Baselayer - Women's - Clothing
![](http://coontail.com/cdn/shop/files/smartwool_Mens_Classic_Thermal_Merino_Base_Layer_Crew_winter_moss_forest_front.jpg?v=1697222866)
Smartwool Men's Classic Thermal Merino Base Layer Crew
![](https://d1nymbkeomeoqg.cloudfront.net/photos/27/8/392291_25839_XXL.jpg)
d1nymbkeomeoqg.cloudfront.net/photos/27/8/392291_2
![](https://buckmans.com/files/store/items/lg/fw24-sma-sw016373-l32-1.jpg)
Smartwool Classic Thermal Merino Base Layer 1/4 Zip - Women's
![](https://jaxgoods.com/cdn/shop/products/66-646740-6044913-image-1620463_640x640.jpg?v=1683235770)
Smartwool Men's Classic Thermal Merino Base Layer 1/4 Zip — JAXOutdoorGearFarmandRanch
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Smartwool / Men's Classic Thermal Merino Base Layer Pattern 1/4 Zip
![](https://runnwalk.com/wp-content/uploads/2022/08/Untitled-4.jpeg)
Classic Thermal Merino Pattern Base Layer 1/4
![](https://www.greatoutdoorshop.com/wp-content/uploads/2023/08/smartwool-womens-base-layer-top-class-thrm-mer-bl-colorblock-winter-sky-heather-45-1000x1000-1-465x465.jpg)
SMARTWOOL Women's Classic Thermal Merino Base Layer 1/4 Zip - Great Outdoor Shop