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 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 ...

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...

Nothing says "go far. feel good.™" like our updated Hike Full Cushion Crew socks (formerly known as PhD® Outdoor)—designed to help you hike how you...

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 ...

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...

Perfect fit. Powerful durability. That's what you get when you put on our responsibly sourced Merino wool women's Hike Light socks. Formerly known ...

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

Perfect fit. Powerful durability. That's what you get when you put on our responsibly sourced Merino wool women's Hike Light socks. Formerly known ...

Put your feet first with the Everyday Margarita Crew Socks. These premium Merino socks feature a secure fit for all-day comfort, plus Shred Shield ...

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 ...

Perfect fit. Powerful durability. That's what you get when you put on our responsibly sourced Merino wool women's Hike Light socks. Formerly known ...

Bring a little more Merino to your every day with the Women's Everyday Cable Crew Socks. These cozy Merino crews feature a slim fit for less bulk a...

This crew will give your foot the ultimate in comfort for any hike. With extended durability zones and updated mesh zones, this sock helps provide ...

A little cushion can go a long way. And our Women’s Hike Light Cushion Mountain Moon Crew Socks are designed to have just the right amount of comfo...

Support your feet through all types of trails in the Women's Hike Targeted Cushion Crew Socks. This women's specific fit is designed for precise cu...

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 ...

Our new and improved Hike Light socks, formerly PhD® Outdoor, offer a women's-specific fit and bring you enhanced features to maximize comfort and ...

Put your feet first with the Everyday Margarita Crew Socks. These premium Merino socks feature a secure fit for all-day comfort, plus Shred Shield ...

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 Everyday Classic Dot Ankle Boot Socks and your favorite ankle boots are a match made in heaven. These premium ankle socks feature a secure fit ...

Get that warm and cozy winter feeling all year long with the Women's Everyday Traditional Snowflake Crew Socks. Featuring a unique snowflake patter...

Find your comfort zone on every hike with our Women's Hike socks. Packed with all our tried-and-true sock innovations, like our Indestructawool™ te...

Support your feet through all types of trails in our Women's Hike Targeted Cushion Ankle Socks. Feel targeted cushioning where you need it most, wi...

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. ...

A little cushion can go a long way. And our Women’s Hike Light Cushion Mountain Moon Crew Socks are designed to have just the right amount of comfo...

A little cushion can go a long way. And our Women’s Hike Light Cushion Mountain Moon Crew Socks are designed to have just the right amount of comfo...

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 ...

Show off your love for wildflowers on the trails with our Women's Hike Light Cushion Retro Floral Mid Crew Socks. With a women's-specific fit, our ...

Show off your love for wildflowers on the trails with our Women's Hike Light Cushion Retro Floral Mid Crew Socks. With a women's-specific fit, our ...

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...

Gear up for a great hike with the Women's Hike Light Cushion Otter Float Crew Socks. With a women’s-specific fit and light cushioning along the bot...

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

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...