Unisex

We invented the first Merino wool performance sock, but we'll never stop trying to make it better. Our Classic Hike socks are getting upgraded and it starts with recycled nylon. The first-ever Merino wool hiking socks are now made more sustainably than...

Our Hike Full Cushion Crew socks, formerly PhD Outdoor, use cushioning on the entire sock to help maximize warmth and protection. These responsibly sourced, ZQ-certified Merino wool hike socks are built with our top sock tech, including Indestructawool...

Do what feels natural in our new Hike Light Crew. Formerly known as PhD Outdoor, we've added enhanced features to our responsibly sourced, ZQ-certified Merino wool socks to help you stay comfortable, breathable, and able to hike any way you like...

Hike how you like in our responsibly sourced, ZQ-certified Merino wool Hike Light socks. Formerly known as PhD Outdoor, these hiking socks are packed with all our tried-and-true sock innovations, like our Indestructawool technology for enhanced...

Our Hike Light Cushion Crew, formerly PhD Outdoor, is designed to help take care of your feet and elevate every hike. We've updated our best hike socks to include more sustainable materials, improved durability, updated mesh zones, and an even more...

When it comes to running socks, we pull out all the stops to keep making improvements on our products. With brand-new Shred Shield technology to help improve wear in the toe box, our PhD Run Ultra Light Micro socks feature the 4 Degree elite fit system...

Our Classic Hike Full Cushion Crew socks focus on comfort and durability, so you can go farther on every hike. Responsibly sourced, ZQ-certified Merino wool keeps things soft, while recycled nylon keeps it all sustainable. And full cushioning on the...

Over 25 years ago, we invented the original Merino wool performance sock-the Classic Hike. The Classic Hike remains mostly unchanged and certainly unmatched in comfort. But today, it’s getting upgraded. And that upgrade starts with recycled...

SW PERF HIKE LT CUSH MICRO STR

Perform with the power and comfort of responsibly sourced, ZQ-certified Merino wool in our Hike Light Cushion Crew socks. Formerly known as PhD Outdoor, we've updated our best hike socks to include more sustainable materials with the addition of recycled...

For the day hiker looking for a little more coverage, this hiking sock adds a small amount of cushion. An open, mesh fabric and two types of rib offer enhanced breathability and a perfect fit. Inspired by today's ultra-light hiking shoes, this...

This trekking sock is ready to go far and, of course, feel good. Heavy full-cushioning provides shock absorption, offers insulation against the elements, and supports under weighty loads. An arch brace holds the sock in place and adds additional support...

This all-purpose hiking sock was designed for rugged day hikes or moderate backpacking. An arch brace holds the sock in place and adds additional support and a flat-knit toe seam matched with our responsibly-sourced Merino wool helps keeps you...

An arch brace holds the sock in place and adds additional support, while a flat-knit toe seam keeps you comfortable throughout the day. Perfect for moderate hiking or aggressive walking.

Our Hike Light Hiker Street Crew combines an elasticized arch brace for a secure fit, a flat knit toe seam for added comfort, and cushioning on the bottom of the sock only with our soft, responsibly sourced Merino wool to bring you your new go-to fall,...

We teamed up with Smartwool athlete and ultrarunner Rob Krar to make a sock that can handle the longest trail runs. Introducing our PhD® Pro Endurance Krar Print Crew. This running sock features Indestructawool™ technology for enhanced durability, our...

Exploring the great outdoors calls for great hiking socks. Our PhD® Outdoor Light Elite Colorado Crew uses targeted cushioning around the toes and heel and features our Indestructawool™ technology for enhanced durability, our 4 Degree™ elite fit system...

When you 've got lots of miles to cover but only want the minimum between your foot and boot, the PhD Outdoor Ultra Light Crew is the perfect trail companion. With our new Shred Shield technology for reduced wear from toes, 4 Degree elite fit system for...

No Show socks typically don't have this much soft cushioning, but that's just another way that Smartwool is revolutionizing the sock industry. Our Men's Sneaker Cushion No Show features increased foot coverage for in-sneaker comfort while perfectly...