Hiking & Backpacking

For the vertically inclined, the Women's PhD® Pro Approach Crew combines carefully designed comfort with rugged purpose. Made with insights from iconic alpinist Conrad Anker, these hiking approach socks feature specified cushioning to help protect feet from footwear friction, our 4 Degree™ elite fit with flex zone, and body-mapped mesh to help make even the most ambitious approaches more manageable.

The Women's Everyday Heritage Crew Socks are one of the most cushioned and warmest women's hiking socks. Featuring an elasticized arch brace for a secure fit and a flat knit toe seam for added comfort, these classic, durable socks are designed to help keep you as comfortable as you need to be when hiking no matter the conditions.

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 entire sock adds the warmth and protection you need for any trail. Stay comfortable out there with our updated women's Classic Hike socks.

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 entire sock adds the warmth and protection you need for any trail. Stay comfortable out there with our updated women's Classic Hike socks.

Hike how you like in absolute comfort with our Women's Classic Hike Crew. Full cushioning on the entire sock brings warmth and protection to every trail, while our responsibly sourced, ZQ-certified Merino wool's natural performance benefits help take care of your feet as you hike. 25 years later, this sock remains unmatched on the mountain. go far. feel good.™

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 nylon—adding more sustainability to our favorite 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.

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 nylon—adding more sustainability to our favorite 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.

Light, half-cushion is perfect for moderate hiking or aggressive walking. Designed for a woman's foot. Arch brace holds the sock in place and adds additional support. Flat-knit toe seam keeps you comfortable throughout the day.

This ultra-light, non-cushioned sock provides a close, lightweight fit that acts as your second skin to minimize friction and blisters. The flat knit toe seam guarantees comfort.

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 help you hit the trail at the highest level. We've extended the durability zones to make them cover even more of the sock—offering the same comfort with even more strength. And updated mesh zones help improve breathability and minimize pressure without sacrificing the perfect sock fit. Add these features to a light-cushioned sock that already provides the highest degree of comfort, fit, and durability, and it's never been easier to go far and feel good.

Perform with the power and comfort of ZQ-certified Merino wool in our Hike Light Cushion Crew socks—formerly known as PhD® Outdoor. We've updated our best women's hiking socks to include more sustainable materials with the addition of recycled nylon, improved durability and mesh zones, and an even more perfect fit. But, don't worry. Our fan-favorite sock technologies aren't going anywhere—offering you all-day comfort and natural performance in a women's-specific fit. A crew height helps add coverage on the trails and light cushioning along the entire bottom of the foot helps keep you comfortable when the ground isn't. Take care of your feet with our best-fitting, best-feeling hiking socks.

Find your comfort zone on every hike with our Women's Hike Light Cushion Low ankle socks. Formerly known as PhD® Outdoor socks, these improved hiking socks are packed with all our tried-and-true sock innovations, like our Indestructawool™ technology for enhanced durability, our 4 Degree™ Elite Fit System and women's-specific fit, and our Virtually Seamless™ toe for even more comfort. We've extended durability zones and updated mesh areas to help maximize breathability without sacrificing the perfect sock fit. And soft responsibly sourced, ZQ-certified Merino wool handles the rest—working hard when you do. With a low ankle height that pairs perfectly with your low-cut hiking shoes, it's easy to stay comfortable on even the longest, most advanced hikes.

For dependably comfortable, reliably durable women’s wool hiking socks, these are just the thing. Constructed from a blend of soft, responsibly sourced Merino wool and recycled nylon for sustainability, this sock will wow you with its features and charm you with its saucy style. Its numerous stay-put and perfect-fit attributes will have you practically skipping along every trail. Hike on!

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 help you get after it at the highest level. We've extended the durability zones to make them cover even more of the sock–offering the same comfort with even more strength. And updated mesh zones help improve breathability without sacrificing the perfect sock fit. Less pressure. More performance. Add these features to a lightly cushioned sock that already provides the highest degree of comfort, fit, and durability, and it's never been easier to go far and feel good.

Nothing says "go far. feel good.™" like our updated Hike Light Mid Crew socks (formerly known as PhD® Outdoor)—designed to help you hike how you like comfortably. We've reimagined the perfect Merino wool hiking sock by using recycled nylon for sustainable construction and improved durability and breathability zones for unwavering comfort. This hiking sock offers a women's-specific fit and features our Indestructawool™ technology for even more durability, our 4 Degree™ Elite Fit System for a dialed, performance-oriented fit, and our Virtually Seamless™ toe for less pressure and more comfort. Light cushion on the bottom of the sock also helps add in-shoe/boot comfort on rough trails.

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 and mesh zones, and an even more perfect fit. Our top sock technologies and women's-specific fit work together with responsibly sourced, ZQ-certified Merino wool to help you perform—naturally. Recycled nylon brings more sustainability to our sock construction, while light cushioning along the entire bottom of the foot paired with a crew height helps you get there on the most rugged trails and in any hiking shoe/boot. Bring more comfort on every hike with Smartwool.

Lightweight, durable and odor-resistant trail socks designed for maximum comfort and premium fit, our Hike+ Heavy Crew socks are ideal for rugged hikes and backpacking trips.

Lightweight, durable and odor-resistant trail socks designed for maximum comfort and premium fit, our Hike+ Heavy Crew socks are ideal for rugged hikes and backpacking trips.

Lightweight, durable and odor-resistant trail socks designed for maximum comfort and premium fit, our Hike Light Crew socks are ideal for day hiking and warmer conditions.

With a thin, lightweight construction that breathes efficiently and dries in a flash, the Hike Liner Crew is a ultralight yet durable sock perfect for weekend hikes and lightweight backpacking trips. This sock features a technical blend of soft merino wool, durable nylon and stretchy LYCRA® for the ultimate combination of performance. Support zones in the Achilles and instep add stability, a breathable zone over the forefoot controls moisture and reinforced wear areas improve strength and durability.

Lightweight, durable and odor-resistant trail socks designed for maximum comfort and premium fit, our Hike Medium Crew Camping Outdoors socks are ideal for rugged day hikes and year-round conditions.

Lightweight, durable and odor-resistant trail socks designed for maximum comfort and premium fit, our Hike+ Light Crew socks are ideal for day hiking and warmer conditions.

Lightweight, durable and odor-resistant trail socks designed for maximum comfort and premium fit, our Hike+ Light Crew socks are ideal for day hiking and warmer conditions.

Lightweight, durable and odor-resistant trail socks designed for maximum comfort and premium fit, our Hike+ Light Crew socks are ideal for day hiking and warmer conditions.

Lightweight, durable and odor-resistant trail socks designed for maximum comfort and premium fit, our Hike+ Light Mini socks are ideal for light hikes and day-long adventures.

Lightweight, durable and odor-resistant trail socks designed for maximum comfort and premium fit, our Hike+ Medium Crew socks are ideal for long hikes and multi-day backpacking.

Lightweight, durable and odor-resistant trail socks designed for maximum comfort and premium fit, our Hike+ Medium Crew socks are ideal for long hikes and multi-day backpacking.

Lightweight, durable and odor-resistant trail socks designed for maximum comfort and premium fit, our Hike+ Medium Crew socks are ideal for long hikes and multi-day backpacking.

Durable, odor-resistant, expedition-weight merino socks designed for maximum comfort and premium fit, our Mountaineer Mid Calf socks are ideal for big climbs and snowy conditions.

The Kelso is an unassumingly intelligent Merino Wool sock designed to power you through day-to-day adventures. From trail hikes to hearty yard work, the cool, silky feel of this micro crew hike sock provides long-lasting energy that will endure far more than your weekend to-do list.