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...

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...

Spruce up your day with our Men's Spruce Street Crew. A supportive arch brace adds a snug fit, and our Virtually Seamless™ toe provides the ultimate in-shoe comfort. Sock Height: Crew Virtually Seamless™ toe for enhanced comfort Supportive arch brace...

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...

Searching for a versatile wool sock that has it all? Look no further: the PhD® Outdoor Medium Crew offers fit, comfort and durability wrapped together in one smart sock. It features Indestructawool™ technology for ultimate durability in high wear areas,...

Two pairs of socks means twice as much stretchy, breathable, quick-drying comfort and performance. Few of life's little delights compare to the feel of a clean pair of socks. When one day calls for another, double your pleasure with the...

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...

It’s time to take “burr” out of your running vocabulary. Stride out in our PhD® Run Cold Weather Mid Crew—one of our warmest and most comfortable running socks. They're  made with a ZQ Merino blend and include mesh zones designed...

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...

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. Fits' patented Full Contact Fit hugs...

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. Fits' patented Full Contact Fití«...

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...

If you like your Merino wool socks with a little more texture, grab our Men's Heathered Rib Crew 2 Pack. These men's casual socks will help add more comfort to your lifestyle. Sock Height: Crew Two Pack: Men's Heather Rib...

An ultra-light cushion sock that mixes fun designs, bright colors, and a fit made to keep you comfortable all day? It sounds too good to be true. Not with the Burgee Crew. Show the world your unique style while staying...

The approach is sometimes the hardest part of the climb, but the PhD® Pro Approach Crew makes it easier with features that make every step more comfortable. With insights from Conrad Anker, it's designed for a perfect fit with added...

When you hit the trails in our new PhD® Run Ultra Light Low Cut socks, the socks are the only thing that should be low. Expectations and elevations should be high. Because this sock was made to help you push...

This ultra-light, non-cushioned hiking sock provides a close, lightweight fit that acts as your second skin to minimize friction and blisters. The flat-knit toe seam paired with our itch- and stink-free responsibly-sourced Merino wool helps guarantee comfort and confidence. Sock...

The Hike Light Crew is a great classic hiking sock for men. An arch brace helps holds the sock in place and adds additional support, while a flat-knit toe seam keeps you comfortable throughout the day. And don't forget about...

Our PhD® Hunt Heavy OTC will hike for days. Heavy cushioning and a breathable, odor-resistant Merino blend make sure the freshness lasts. Our Indestructawool™ technology ensures durability and comfort, and our 4 Degree™ elite fit system keeps the socks right...

Pull on the cushion with our stylish Barnsley Crew. Highly breathable Merino helps regulate temperature and chill out odors. Inside or out roaming the countryside, these socks stay in place and feel great. Sock Height: Crew Supportive arch brace Made...

A refreshed version of the Classic Rib, the New Classic Rib is a cushioned crew sock that offers wonderful stretch and luxurious, soft Merino wool next to your skin. Great fit and maximum comfort.

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...

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...

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

Our most popular hiking sock style, 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...

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...