Innovate. Test. Repeat.

We believe that good enough is never good enough. We released our first hiking socks back in 1994 and since then we’ve added new styles, technologies and fit systems for every type of adventure. The heart and soul of our socks remain the same, though: they deliver ultimate comfort and durability whether you’re trekking around the world or walking around the block.


The Evolution of Smartwool Socks


1994: Classic Hiking Socks

The socks that started it all.
One of the most popular sock collections we’ve ever created, our classic hiking socks have made hikers, trekkers and anyone who likes comfortable socks happy for over 20 years.

2003: Introducing Casual Socks

Bringing our signature colorful and pattern-rich Casual Socks to the world.
Even the most dedicated outdoor enthusiasts need some downtime, so we focused our new collection on those in-between moments when we still wanted the comfort of Merino socks but in everyday style. These socks offered all the comfort benefits of our performance socks but also introduced our signature stripes and bold colors.

2004: Adrenaline Socks

Putting 10 years of R&D to work in a new outdoor series.
A customer favorite, the Adrenaline series took performance socks to the next level. This line introduced the Smart Fit system, complete with contoured flex zones, an arch brace and a flat knit toe seam and was our first performance sock line designed for all-mountain adventures.

2008: PhD® Socks

Introducing socks with the Highest Degree of Performance.
Our socks were always smart, but this new line had a doctorate in performance and comfort. Our first sport-specific performance socks, the original PhD® collection featuring our WOW™ technology for impact protection, the new 4 Degree™ fit system for a dialed fit and mesh zones for ventilation.

2012: New PhD® Socks

Bringing innovative design and fit to our highest-performing socks.
The new PhD® sock collection continued to advance our performance socks with an improved fit thanks to the new 4 Degree® elite fit system and greater durability with patented ReliaWool™ technology.

2012: New Casual Socks

Evolving everyday performance.
We took our mountain smarts that have powered our performance socks for decades and put them to work in our new casual sock line, adding new reinforced durability zones for even longer wear.

2016: PhD® Socks with Indestructawool Technology™

Our most advanced socks yet.
Featuring patent-pending Indestructawool™ durability technology, the latest evolution of PhD® socks are engineered to outlast your greatest adventures. These fully loaded socks offer gender-specific fit, a Virtually Seamless™ toe and mesh zones for all day comfort.