Kalen Thorien wearing Smartwool Merino 250 base layers

Merino 250 Base Layers

Made from super fine, humanely sourced 100% Merino Wool, our Merino 250 base layer is technically long underwear, and technically awesome.

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Vans by Smartwool collection

Vans by Smartwool

We teamed up with Vans to create an all-mountain sock collaboration that brings a heritage of bold expression and craftsmanship to life. 

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Smartwool premium socks collection

Premium Collection

Premium Construction. Refined Style. Luxurious Feel. We took over 20 years of sock construction expertise to bring you the ultimate in comfort and construction.

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Innovate. Test. Repeat.


Get a sneak peek into over 20 years of sock innovation and mountain smarts.

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Layer Up


Our layers work together as a system so your body can breathe better and run more efficiently.

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Made in the USA


We’re proud to make most of our socks right here in the USA.

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New PhD Approach Sock


The next evolution in our partnership with iconic alpinist Conrad Anker, the PhD Outdoor Approach takes new sock technology to new heights.

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