Smartwool & Fits Socks

Featuring Light Elite cushioning, these wool running socks contain targeted cushioning placed where runners need it most, on the ball and heel of the foot. We packed these socks chock full of smart features like our 4 Degree™ elite fit...

We've put all of our smarts into these new and improved Women's PhD® Run Ultra Light Micro socks. You won't break your stride, thanks to our Indestructawool™ technology designed for added durability and an Achilles tab designed to help prevent...

Featuring Light Elite cushioning, these wool running socks contain targeted cushioning placed where runners need it most, on the ball and heel of the foot. We packed these socks chock full of smart features like our 4 Degree™ elite fit...

A true rugged sock in a lighter weight. Dont let the "light" in the name fool you; this sock is no lightweight when it comes to comfort, durability and all the heavy-duty work you can throw at it. Our patented...

An ankle-high powerhouse, the PhD® Outdoor Light Micro is made for mileage. Great for long summer treks, our lightweight, best-fitting hiking sock combines support, stretch, and recovery. Featuring Indestructawool™ technology for ultimate durability and the 4 Degree® elite fit system...

Experience durability at its peak with the PhD® Outdoor Light Crew. Featuring Indestructawool™ technology, a patent-pending wool-based durability construction, these socks are ready for any adventure on your list. Plus, with redesigned mesh zones, a Virtually Seamless™ toe and the...

When you're passionate about running, sometimes you can't wait for the storm to pass to get after it. Our PhD® Run Cold Weather Mid Crew is one of our warmest running socks and will help you get outside and stay...

A very comfortable, breathable sock that will manage moisture and look great all day long. This is the sock that you will not take off when you get home from a busy day. Our patented Full Contact Fit® hugs the contours...

If you like your everyday socks with a little something extra, this is the sock for you. Our casual crew is cushioned throughout the toe/heel and arch for extra comfort. A solid color sock in five basic colors designed to...

Fits most popular hiking sock style, the Light Hiker, is cushioned under the foot to take the pounding of an all-day trek while managing all the moisture you can throw at it. The subtle banded design along the sock adds...

The ultimate combination: Merino wool for cold weather insulation and the performance that comes from a perfect fit. There is no other heavyweight sock that can make this claim. If there were, we would have made it! This sock is...

A work sock, a sport sock, a boot sock. Any of these descriptors will fit this rugged work horse. The 100% Merino wool is knit into a mid-weight construction of terry loops on the inside to control moisture while keeping...

A very comfortable, breathable sock that will manage moisture and look great all day long. This is the sock that you will not take off when you get home from a busy day. Our patented Full Contact Fit® hugs the contours...

For those who want the lightest running sock but still want a super-fine Merino wool, the Ultra-light fits the bill. Nothing but protection between you and your running shoes. FEATURES: Patented Full Contact Fití« hugs the contours of your foot...

A low-cut, cushioned sock that your shoe will not eat. High-impact cushioning only where you need - it in the toe cup and the heel lock areas. This sock delivers pavement-pounding performance in every stride. Our patented Full Contact Fití«...

The Micro Light Performance Trail looks different for a reason. The high cuff is a built-in scree-guard that helps keep out the trail while you're trail running. Below the cuff is a vented lower that increases breathability during highly aerobic...

A no-show, cushioned sock that your shoe will not eat. High-impact cushioning only where you need it - in the toe cup and the heel lock areas. This sock delivers pavement-pounding performance in every stride. Our patented Full Contact Fit hugs...

The Casual Crew is cushioned throughout the toe/heel and arch for extra comfort  especially in shoes that have no cushion in their construction. Now available in Micro-Light cushioning and a stylish new Argyle design! Our patented Full Contact Fit hugs...

The sock that started it all! The venerable Medium Hiker. If you like a little more cushioning all around your foot but don’t want a really heavy sock, this is the sock for you. For years this sock has been...

All the great features of our Light Hiker but in a lower profile for those that like their socks close to the top of their hikers. The FITSí« quarter length sock is also one of the greatest all-around socks money...

The Light Hiker, is cushioned under foot to take the pounding of an all-day hike while managing all the moisture you can throw at it. Our patented Full Contact Fit® hugs the contours of your foot and stays put so there...

FITS designed the Performance Trail Quarter Sock for folks who demand serious performance from all their gear. The Performance Trail Sock cushions, protects your foot from rocks and trail debris, and promotes airflow to keep you dry and comfortable while...