Thermal Socks | Warm Socks

The Outdoor series was designed for running and hiking on rugged trails in unpredictable weather. Newly upgraded to Merino wool construction, the O...

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

Our Classic Hike Extra Cushion Crew sock features a dense cushion for adventurers who need more padding in their favorite hiking shoe or boot. This...

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

Formerly called PhD® the new Smartwool Hike represents Smartwool’s newest and most up-to-date performance hike socks. With a mid crew height and a ...

Our Classic Hike Extra Cushion Crew sock features a dense cushion for adventurers who need more padding in their favorite hiking shoe or boot. This...

Get a pair of our most durable, best-fitting mountaineering socks for your next adventure. An arch brace holds the sock in place and extra-heavy cu...

Step up your everyday sock game with our Everyday Solid Rib Crew Socks. These Merino crew socks feature a "stay put" fit, enhanced durability, and ...

Our Classic Hike Full Cushion Crew socks focus on comfort and durability, so you can go farther on every hike. Responsibly sourced, ZQ-certified Me...

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

The Outdoor series was designed for running and hiking on rugged trails in unpredictable weather. Newly upgraded to Merino wool construction, the O...

Meet the one sock you'll need all winter. These wonderfully comfy socks give a nod to classic business sock but offer the comfort and benefits of m...

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 t...

Feel the peak of hiking comfort with our Hike Targeted Cushion Ankle Socks. Designed with our top sock technologies and cushioning in key areas, ke...

Feel the peak of hiking comfort with our Hike Targeted Cushion Ankle Socks. Designed with our top sock technologies and cushioning in key areas, ke...

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

Our Hike Light Cushion Pattern Ankle Socks bring you enhanced features to maximize comfort and help you get after it at the highest level. We've ex...

Hike how you like in our responsibly sourced, ZQ-certified Merino wool Hike Light Cushion socks. These hiking socks are packed with all our tried-a...

The most rugged trails call for the most dense cushioning. That's why you need a pair of our Hike Full Cushion Lolo Trail Crew Socks in your sock d...

Hit that new trail in the Performance Hike Light Cushion Low Ankle sock, and you’ll be smiling from start to finish. This responsibly sourced Merin...

Support your feet through all types of trails in our Hike Targeted Cushion Crew Socks. Feel precise cushioning where you need it most, with a 4 Deg...

Our Classic Hike Full Cushion Crew socks focus on comfort and durability, so you can go farther on every hike. Responsibly sourced, ZQ-certified Me...

With full, plush cushioning, the Classic Mountaineer Classic Edition Max Cushion Second Cut™ Crew Socks are just right for your long-distance and ...

Nothing beats that panoramic view from the summit. Except maybe the enhanced comfort and durability of our Hike Light Cushion Panorama Crew Socks. ...

In black or white, the Classic Hike Zero Cushion Liner Crew hearkens back to our original construction but adds in recycled nylon for strength and ...

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

The most rugged trails call for the most dense cushioning. That's why you need a pair of our Hike Full Cushion Lolo Trail Crew Socks in your sock d...

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

With a mid crew height and a comfort welt with “stay put” fit, the Hike Light Cushion Mid Crew shows just enough of its personality above the shoe ...

These hike socks? They're made out of old hike socks. Yep, our Hike Classic Edition Full Cushion 2nd Cut Crew Socks are made with a mix of recycled...

These hike socks? They're made out of old hike socks. Yep, our Hike Classic Edition Light Cushion 2nd Cut Crew Socks are made with a mix of recycle...

Our Classic Hike Full Cushion Crew socks focus on comfort and durability, so you can go farther on every hike. Responsibly sourced, ZQ-certified Me...

The Hike Light Cushion Mountain Moose Crew Socks gets us about as close as we'd want to be to a moose in the wild. Designed with our top sock techn...

Hit a new trail in the Hike Targeted Cushion Low Ankle Sock, and you’ll be smiling from start to finish. With precise cushioning where you need it...

These hike socks? They're made out of old hike socks. Yep, our Hike Classic Edition Full Cushion 2nd Cut Crew Socks are made with a mix of recycled...

These hike socks? They're made out of old hike socks. Yep, our Hike Classic Edition Full Cushion 2nd Cut Crew Socks are made with a mix of recycled...

These hike socks? They're made out of old hike socks. Yep, our Hike Classic Edition Full Cushion 2nd Cut Crew Socks are made with a mix of recycled...

These hike socks? They're made out of old hike socks. Yep, our Hike Classic Edition Light Cushion 2nd Cut Crew Socks are made with a mix of recycle...

These hike socks? They're made out of old hike socks. Yep, our Hike Classic Edition Light Cushion 2nd Cut Crew Socks are made with a mix of recycle...

These hike socks? They're made out of old hike socks. Yep, our Hike Classic Edition Light Cushion 2nd Cut Ankle Socks are made with a mix of recycl...