Perform with the power and comfort of responsibly sourced, ZQ-certified Merino wool in Smartwool's Hike Light Cushion Crew socks.

Formerly known as PhD® Outdoor, Smartwool have updated their best hike socks to include more sustainable materials with the addition of recycled nylon, improved durability, updated mesh zones, and an even more perfect fit. But, don't worry. The fan-favorite sock technologies aren't going anywhere—offering you the comfort and performance you expect from Smartwool.

The crew height also adds extra coverage on the trails and light cushioning on the entire bottom of foot helps keep you comfortable when the ground isn't—helping you to hike on.

With full, plush cushioning, the Classic Mountaineer Maximum Cushion Crew sock is just right for your long-distance and backpacking hikes.

Its elasticized arch brace offers secure, lasting fit, and its flat knit toe seam helps with in-shoe comfort.

 Smartwool's thickest, warmest sock, this wool crew helps ensure that your feet stay comfortable, no matter how long the hike.

The Women's Hike Medium Crew keeps feet dry and happy for miles of switchbacks, scrambles, and climbs.

Merino helps move moisture and regulate body temperature, while medium cushioning gives tired feet extra padding. An arch support and flat-knit toe seams add extra comfort.

The Classic Hike Zero Cushion Liner Crew hearkens back to Smartwool's original construction but adds in recycled nylon for strength and durability while reducing environmental impact.

This liner has an elasticized arch brace so your foot will enjoy a secure fit, and it will give you a flat knit toe seam for additional comfort.

When you’re ready for your next hike, be sure to grab a pair of these responsibly sourced Merino wool socks to make the most of each mile on the trail.

The cushioning on the entire Performance Hike Full Cushion Crew sock provides added protection and warmth for those chillier hikes.

This year’s sock offers Indestructawool™ technology with extended durability zones for a stronger, longer-lasting sock. Add in the smoothed-out toe seams that enhance in-shoe fit and comfort, and you know your trek will be more enjoyable than ever.

So get out and get moving on those trails!

Over 25 years ago, Smartwool 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 nylon—adding more sustainability to Smartwool's favourite socks. They’re also made with responsibly sourced, ZQ-certified wool that was grown with a focus on ensuring environmental, social, and economic sustainability while also taking the best care of our Merino sheep.

This is a women's cozy, capable classic that is never going out of style.

Be sure to start your next run with footwear that offers as much comfort as possible.

Smartwool's Run Targeted Cushion Ankle Socks are designed with cushion on the most impact-prone areas - the ball and heel of the foot - as well as other feel-good features like mesh zones for breathability, and Virtually Seamless™ toe.

Plus, because they’re made with responsibly sourced Merino wool, they’re naturally odor-resistant and temperature-regulating. And, with Indestructawool™ technologies, they’re built to last, mile after mile.

Smartwool's Women’s Run Zero Cushion Low Ankle socks offer the comfort and durability that will help make every mile feel good. Indestructawool™ and Shred Shield™ technologies increase the sock’s durability, while the 4 Degree™ elite fit system, Virtually Seamless™ toe, women's specific fit, and breathable mesh zones increase its comfort.

No matter if you’re hitting the trail, the pavement, or the treadmill for some good old-fashioned training miles, be sure your gear includes the sock that will help you stay comfortable on every stride.

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

This "go far. feel good.™" originator is getting an eco-friendly makeover thanks to recycled nylon and responsibly sourced Merino wool, but still offers the unmatched comfort it did in 1994.

Elevate every hike with this cozy, capable classic.

Over 25 years ago, Smartwool 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 nylon - creating a more sustainable (but just as comfortable) sock. They’re also made with responsibly sourced, ZQ-certified wool that was grown with a focus on ensuring environmental, social, and economic sustainability while also taking the best care of our Merino sheep.

This is a cozy, capable classic that is never going out of style.

Whether you run on a track, on a sidewalk, or on a trail, you want your feet to stay as comfortable as possible.

These low ankle socks are built to help with that. They offer a dialed-in women's specific fit, breathability, and reduced slippage.

Plus, their Indestructawool™ technology helps them last through the miles. And because they’re made with responsibly sourced Merino wool, they’re comfortable and odor-resistant. For better comfort on your next run, choose Smartwool's Women’s Run Targeted Cushion Low Ankle sock.

Smartwool's 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 entire sock adds the warmth and protection you need for any trail.

Stay comfortable out there with our updated women's Classic Hike socks.

Smartwool's 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™ technology for enhanced durability, our 4 Degree™ Elite Fit System for a dialed-in, performance-oriented fit, and our Virtually Seamless™ toe for maximum in-shoe/boot comfort.

Smartwool have updated their hike line by improving mesh zones for additional breathability, as well as creating a new ply structure that reduces pilling while enhancing hand-feel and comfort. Not to mention, Smartwool's best-feeling, best-fitting hiking socks are now made with recycled nylon—making these socks more sustainable than ever. Now that's something you can feel good in and about.