Unisex Socks

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 Enduran...

Venture further and stay warmer with the PhD Outdoor Heavy Crew. Heavy cushioning and the power of Merino help keep your feet warm, dry and comfort...

Built for kids. Built for the long haul. Our Hiker Jr. is trail ready and Darn Tough to the core. Merino Wool keeps feet dry and happy whatever the...

Designed to help keep your little one's toes nice and cozy, the Kids' Wintersport Yo Yeti is perfect for winter adventures. With cushioning in the ...

For a sock that has it all, look no further: the PhD Outdoor Medium Crew offers fit, comfort and durability wrapped together in one smart sock. Fea...

Our Hike Full Cushion Crew socks, formerly PhD Outdoor, use cushioning on the entire sock to help maximize warmth and protection. These responsibly...

Perfect fit. Powerful durability. That's what you get when you put on our Hike Light socks-formerly known as PhD Outdoor. Featuring our top sock te...

Pedals like hell. Feels like heaven. Our PhD Cycle Ultra Light Divide Trail Print Crew helps bring more comfort to every ride. With our Indestructa...

Over 25 years ago, we invented the original Merino wool performance sock-the Classic Hike. The Classic Hike remains mostly unchanged and certainly ...

Perform with the power and comfort of responsibly sourced, ZQ-certified Merino wool in our Hike Light Cushion Crew socks. Formerly known as PhD Out...

Looking for a lightweight, bulk-free sock to help add some comfort to your ski days? Look no further than the PhD Ski Light Elite. These men's ski ...

Time for some family trail time, thanks to a hiking sock built specifically for your kiddos. Our Kids' Striped Hike Medium Crew has medium cushioni...

Your baby can't get much cuter once they have the Bootie Batch on. The batch comes as a 3-pack, which features two fun, vibrant patterns.

Pull on a pair of our Athletic Light Stripe Crew and throw it back to gym days filled with dodgeball, basketball, and the questionable safety of th...

All signs point to the ultimate in comfort in our Ouray Arrow Hide and Seek No Show socks. Perfect for your low cut shoes!

All signs point to the ultimate in comfort in our Ouray Arrow Hide and Seek No Show socks. Perfect for your low cut shoes!

Featuring Light Elite cushioning, these socks contain targeted cushioning placed only where runners need it most, on the ball and heel of the foot....

Our best fitting, most advanced run socks yet, we packed years of testing, prototypes and running smarts into these socks. Featuring Light Elite cu...

If your kiddos love to adventure as much as you do, get them geared up with our Kids' Hike Light Park Explorer Pattern Crew socks. These Merino woo...

The Hike Light Striped Crew offers the same secure fit and comfort level as the original, but with a salute to stripes. This men's hiking sock brin...