Socks

In designing our Women’s Athlete Edition Run Print Crew Socks, we partnered with ultrarunner Rob Krar to determine which comfort and performance features were best suited to this runner-focused sock. It starts with Merino wool construction, which provides odor resistance and temperature regulation, and adds in a performance-oriented and women's specific fit, a Virtually Seamless toe, and breathable mesh zones. Next, this sock offers Indestructawool and Shred Shield technologies for enhanced durability. To top it off, the sock is patterned with an eye-catching print that’s sure to get noticed next time you podium. Features: - Sock Height: Crew - Sock Cushion: Targeted Cushion - Rob Krar signature sock - Indestructawool technology with extended durability zones - 4 Degree elite fit system for a dialed-in, performance-oriented fit - Shred Shield technology reduces wear from toes - Mesh zones for added breathability - Virtually Seamless toe for enhanced comfort - Women's specific fit; 7" overall height - Made in the USA of Imported Yarn: 54% Merino Wool 32% Nylon 10% Recycled Nylon 3% Elastane 2% Polyester *Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.

The print on these women's cycling socks will remind you of the mountains, whether you're actually up in them or wishing you were. Made from responsibly sourced Merino wool, they're purpose-built for comfort and durability: these socks feature Shred Shield technology, the 4 Degree elite fit system for a performance-oriented fit, and a Virtually Seamless toe to reduce toe box pressure. Plus, they're breathable and odor-resistant, which your feet (and your riding partners) will thank you for. Grab a pair of our Women's Bike Zero Cushion Mountain Print Crew Socks for your next biking adventure! Features: - Sock Height: Crew - Sock Cushion: Zero Cushion - Indestructawool technology for enhanced durability - 4 Degree elite fit system for a dialed-in, performance-oriented fit - Shred Shield technology reduces wear from toes - Mesh zones for added breathability - Virtually Seamless toe for enhanced comfort - Women's specific fit - Overall 7" height - Made in the USA of Imported Yarn: 47% Merino Wool 43% Nylon 2% Recycled Nylon 4% Elastane 4% Polyester *Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.

- Made in USA, Women's Specific Fit - Crew - Full Cushion

Our Women's Everyday Stitch Stripe Crew Socks are a study in comfort, durability, and style. Offering a secure, women's specific fit for continuous comfort, this sock is made with responsibly sourced Merino wool for naturally soft odor control and temperature regulation. Plus, it's designed with a Virtually Seamless toe and Shred Shield technology for reliable comfort that lasts. And it's all capped off with zesty stripe-and-dot fashion, so it's a step away from the everyday. Features: - Sock Height: Crew - Sock Cushion: Zero Cushion - Secure fit for all-day comfort - Versatile durability - Comfort welt with 'stay put' fit - Shred Shield technology reduces wear from toes - Virtually Seamless toe for enhanced comfort - Women's specific fit; 7" overall height - Made in the USA of Imported Yarn: 50% Merino Wool 45% Nylon 2% Recycled Nylon 3% Elastane *Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.

First. Never finished. We invented the first Merino wool performance sock, but we'll never stop trying to make it better. Our Classic Hike socks are getting upgraded and it starts with recycled nylon. Our first-ever Merino wool hiking socks are now made more sustainably than ever before. Light cushioning on the bottom of the sock and ZQ-certified Merino wool offers comfort and natural performance benefits that help take care of your feet on every hike. With new patterns and the same all-day comfort, our oldest (and best) women's Merino hike sock may be your new favorite. Features; - Sock Height: Crew - Our first sock construction, only now featuring recycled nylon (content varies by style) - Elasticized arch brace for secure fit - Flat knit toe seam for additional comfort - Knit in USA of Imported Yarn: 56% Merino Wool, 11% Nylon, 31% Recycled Nylon, 2% Elastane

Playful design. Powerful performance. That's what you get with our Women's Hike Full Cushion Alpine Perch Crew Socks. Full cushioning helps take care of your feet on the most rugged trails, while soft Merino wool helps keep things comfortable next to skin. Enjoy the natural benefits of Merino every time you put these on and get out there. Features: - Sock Height: Crew - Sock Cushion: Full Cushion - Indestructawool technology with extended durability zones - 4 Degree elite fit system for a dialed-in, performance-oriented fit - Additional body-mapped mesh zones for added breathability - Virtually Seamless toe for enhanced comfort - Comfort welt with 'stay put' fit - Women's specific fit - Made in the USA of Imported Yarn: 57% Merino Wool 12% Nylon 29% Recycled Nylon 2% Elastane *Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.

Fun design meets functional comfort in our Women's Hike Light Cushion Print Crew Socks. Featuring light cushioning everywhere you need it and a design by Manual for All, this Merino wool hiking sock is both soft and stylish. But that's not all. These women's socks include our top sock technologies, including Indestructawool technology with extended durability zones, our Virtually Seamless toe for enhanced comfort, and a fit system that offers a tailored-to-you feel. It's easier than ever to go far and feel good with these on your feet. Features: - Sock Height: Crew - Sock Cushion: Light Cushion - Manual For All designs by Smartwool - Indestructawool technology with extended durability zones - 4 Degree elite fit system for a dialed-in, performance-oriented fit - Additional body-mapped mesh zones for added breathability - Virtually Seamless toe for enhanced comfort - Comfort welt with 'stay put' fit - Women's specific fit - Made in the USA of Imported Yarn: 0 *Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.

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! Features: - Sock Height: Crew - Sock Cushion: Light Cushion - Indestructawool technology with extended durability zones - 4 Degree elite fit system for a dialed-in, performance-oriented fit - Additional body-mapped mesh zones for added breathability - Virtually Seamless toe for enhanced comfort - Comfort welt with 'stay put' fit - Women's specific fit - Height 7" - Made in the USA of Imported Yarn: 55% Merino Wool 12% Nylon 30% Recycled Nylon 3% Elastane *Specific percentage of recycled nylon will vary as we transition to 100% recycled nylon in future seasons.

Hike farther in more comfort with our Hike Light Cushion Crew—formerly known as PhD Outdoor. This hiking sock offers a women's-specific fit and debuts new enhanced features, like improved mesh zones, extended durability, and a more sustainable construction with the use of recycled nylon. And our tried-and-true sock technologies work as you do—helping to take care of your feet on any trail. A crew height helps add coverage and light cushioning on the entire bottom of the foot helps keep you comfortable when the ground isn't. Experience the power and natural performance of ZQ-certified Merino wool with these Smartwool hiking socks. Features: - Virtually Seamless toe for enhanced comfort - Additional body-mapped mesh zones for added breathability - Comfort welt with 'stay put' fit - Women's specific fit - Made in USA of Imported Yarn: 56% Merino Wool, 11% Nylon, 31% Recycled Nylon, 2% Elastane - Sock Height: Crew - Noelle Phares designs by Smartwool - Indestructawool technology with extended durability zones - 4 Degree elite fit system for a dialed-in, performance-oriented fit

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. Features: - Sock Height: Mid Crew - Sock Cushion: Light Cushion - Indestructawool technology with extended durability zones - 4 Degree elite fit system for a dialed-in, performance-oriented fit - Virtually Seamless toe for enhanced comfort - Comfort welt with 'stay put' fit - Additional body-mapped mesh zones for added breathability - Women's specific fit - Height 3.25" - Made in USA of Imported Yarn: 56% Merino Wool, 11% Nylon, 31% Recycled Nylon, 2% Elastane *Specific percentage of recycled nylon will vary as we transition to 100% recycled nylon in future seasons.

For outdoors enthusiasts, few images are more iconic than a tent and a campfire backdropped by mountains and a full moon. Which is part of what makes these socks ideal for any great hike. With their comfort features and durable construction, these socks are a welcome trail companion. Features: - Sock Height: Crew - Sock Cushion: Light Cushion - Indestructawool technology with extended durability zones - 4 Degree elite fit system for a dialed-in, performance-oriented fit - Additional body-mapped mesh zones for added breathability - Virtually Seamless toe for enhanced comfort - Comfort welt with 'stay put' fit - Women's specific fit - Height 7" - Made in the USA of Imported Yarn: 54% Merino Wool 12% Nylon 31% Recycled Nylon 3% Elastane *Specific percentage of recycled nylon will vary as we transition to 100% recycled nylon in future seasons.

Hike how you like in our responsibly sourced ZQ-certified Merino wool Hike Light socks. Formerly known as PhD Outdoor, these hiking socks are packed with all of our tried-and-true sock innovations, like our Indestructawool technology for enhanced durability, our 4 Degree Elite Fit System for a dialed-in, performance-oriented fit, and our Virtually Seamless toe for even more comfort. A women's-specific fit and light cushioning along the entire bottom of the foot helps you feel your best on every trail. We've extended durability zones and updates mesh areas to help maximize breathability without sacrificing the perfect sock fit in any hiking shoe or boot. Features: - Sock Height: Mid Crew - Sock Cushion: Light Cushion - Indestructawool technology with extended durability zones - 4 Degree elite fit system for a dialed-in, performance-oriented fit - Additional body-mapped mesh zones for added breathability - Virtually Seamless toe for enhanced comfort - Comfort welt with 'stay put' fit - Women's specific fit - Height 5.5" - Made in USA of Imported Yarn: 56% Merino Wool, 11% Nylon, 31% Recycled Nylon, 2% Elastane *Specific percentage of recycled nylon will vary as we transition to 100% recycled nylon in future seasons.

The pattern on our Women's Run Targeted Cushion Brush Stroke Print Low Ankle sock looks as peppy as your feet will feel wearing it. With the 4 Degree elite fit system's spot-on women's specific fit, the enhanced comfort of the Virtually Seamless toe, and targeted mesh zones for increased breathability, this sock offers comfort aplenty. Plus, it's designed with an Achilles tab to keep the sock from slipping, as well as Indestructawool technology for durability. All that before even mentioning the Merino wool construction, which makes the sock breathable, odor-resistant, and comfy. These socks are created to add a little extra pep to every running step. Features: - Sock Height: Low Ankle - Sock Cushion: Targeted Cushion - Indestructawool technology with extended durability zones - 4 Degree elite fit system for a dialed-in, performance-oriented fit - Mesh zones for added breathability - Virtually Seamless toe for enhanced comfort - Women's specific fit - Achilles tab prevents sock from slipping into footwear - Made in the USA of Imported Yarn: 57% Merino Wool 36% Nylon 2% Recycled Nylon 3% Elastane 2% Polyester *Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.

If you're looking for a dependable run sock to help you churn out those miles, this one might just fit the bill. Indestructawool and Shred Shield technologies increase the sock's durability, while the 4 Degree elite fit system, women's specific fit, Virtually Seamless™ toe, and breathable mesh zones increase its comfort. Add to that its Merino wool construction, which aids in odor resistance and temperature regulation, and our Women's Run Zero Cushion Ankle sock is a "shoo-in" to be one of your favorites. Features: - Sock Height: Ankle - Sock Cushion: Zero Cushion - Indestructawool technology with extended durability zones - 4 Degree elite fit system for a dialed-in, performance-oriented fit - Mesh zones for added breathability - Shred Shield technology reduces wear from toes - Virtually Seamless toe for enhanced comfort - Women's specific fit - Overall 3.25" height - Made in the USA of Imported Yarn: 45% Merino Wool 31% Nylon 21% Recycled Nylon 3% Elastane *Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.

A good run is about being—and staying—in the zone, so the right footwear is crucial, starting with your socks. Our Women's Run Zero Cushion Mid Crew Socks offer great comfort features: the 4 Degree elite fit system for a performance-oriented fit, a Virtually Seamless toe, women's specific fit, and breathable mesh zones. Plus, they're designed to be durable, with Shred Shield technology as well as Indestructawool technology. And they're made even better with responsibly sourced Merino wool for comfort and odor resistance. Get in the zone, and stay there with these socks! Features: - Sock Height: Mid Crew - Sock Cushion: Zero Cushion - Indestructawool technology with extended durability zones - 4 Degree elite fit system for a dialed-in, performance-oriented fit - Mesh zones for added breathability - Shred Shield technology reduces wear from toes - Virtually Seamless toe for enhanced comfort - Women's specific fit - Overall 5.5 height - Made in the USA of Imported Yarn: 49% Merino Wool 24% Nylon 23% Recycled Nylon 4% Elastane *Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.

Our Women's Run Zero Cushion Ombre Print Low Ankle socks have a cheeky brightness that won't get lost in your sock drawer. They're purpose-built for comfort and durability, with the 4 Degree elite fit system for a performance-oriented fit, a women's specific fit for comfort, a Virtually Seamless toe, breathable mesh zones, and Indestructawool and Shred Shield technologies. With comfort and style as part of their DNA, these women's run socks are designed to help you go far and feel good, run after run. Features: - Sock Height: Low Ankle - Sock Cushion: Zero Cushion - Indestructawool technology with extended durability zones - 4 Degree elite fit system for a dialed-in, performance-oriented fit - Mesh zones for added breathability - Shred Shield technology reduces wear from toes - Virtually Seamless toe for enhanced comfort - Women's specific fit - Achilles tab prevents sock from slipping into footwear - Made in the USA of Imported Yarn: 51% Merino Wool 25% Nylon 19% Recycled Nylon 4% Elastane 1% Polyester *Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.

Our Women’s Run Zero Cushion Stripe Low Ankle socks are chock-full of comfort and durability. This run sock’s women’s specific fit, Virtually Seamless™ toe, and breathable mesh zones increase its comfort. And Indestructawool and Shred Shield technologies increase its durability, so you know it will last through the miles and help keep your feet feeling good and going farther on every run. Features: - Sock Height: Low Ankle - Sock Cushion: Zero Cushion - Indestructawool technology with extended durability zones - 4 Degree elite fit system for a dialed-in, performance-oriented fit - Mesh zones for added breathability - Shred Shield technology reduces wear from toes - Virtually Seamless toe for enhanced comfort - Women's specific fit - Achilles tab prevents sock from slipping into footwear - Made in the USA of Imported Yarn: 47% Merino Wool 31% Nylon 19% Recycled Nylon 3% Elastane *Specific percentage of Recycled Nylon will vary as we transition to 100% Recycled Nylon in future seasons.

Our socks are fully waterproof thanks to 3-layers: a wear-resistant knit exterior (feels like a regular sock), a waterproof breathable Artex™ membrane, and a Merino Wool blend anti-bacterial lining. Our unique manufacturing process 3-D forms each sock so as to contour to your foot naturally, providing all-day support and comfort. The result is a sock that feels like a sock but protects like a rain bootie, with all the natural benefits of Merino Wool. Now you don't have to choose between keeping your feet dry and breathability (we don't like sweaty feet either). A reinforced toe and heel provide comfort and durability. Outer Sock: 78% Nylon, 15% Polyester, 7% Spandex Inner Sock: 40% Merino Wool, 40% Acrylic, 17% Polyester, 2% Spandex, 1% Nylon.

While they may feel like regular socks, the Showers Pass Crosspoint Waterproof Mountain Socks are fully windproof and waterproof, thanks to a proprietary 3-layer construction. Features include a wear-resistant knit exterior, a seamless waterproof breathable Artex membrane, and a moisture-wicking Merino Wool-blend lining. In short, they effectively turn any shoe into a windproof and rainproof solution for inclement weather. Our unique manufacturing process 3-D forms each sock so as to contour to your foot naturally, providing all-day support and comfort. The socks are designed to be a compression fit, delivering maximum breathability during foot motion. The Crosspoint Waterproof Mountain Socks are a necessity for anyone who spends time in the wet outdoors. - 3-layer construction: Wear-resistant knit exterior, a seamless waterproof Artex membrane, and a moisture-wicking Merino Wool-blend lining - Ergonomic fit due to a proprietary 3-D laminating process - Microporous waterproof membrane allows the sock to ventilate in order to decrease sweat accumulation - Inner: 39% Merino Wool, 39% Acrylic, 13% Polyester, 7% Nylon - Outer: 80% Nylon, 14% Polyester, 4% Lycra, 2% Spandex - Moisture-wicking, anti-microbial lining - Mid-calf waterproof protection

We developed Crosspoint Waterproof Socks to solve the soggy toe problem and to keep your feet dry while cycling, running, hiking, hunting, and any outdoor activity in the rain. Our socks are fully waterproof thanks to 3 layers: a wear-resistant knit exterior (feels like a regular sock), a waterproof breathable Artex membrane, and a Coolmax FX moisture-wicking anti-bacterial lining. Our unique manufacturing process 3D-forms each sock so as to contour to your foot naturally, providing all-day support and comfort. The result is a sock that feels like a sock but protects like a rain bootie. Now you don't have to choose between keeping your feet dry and breathability (we don't like sweaty feet either). A reinforced toe and heel provide comfort and durability.

This versatile sock is just as comfortable under your cycling shoes as it is in your favorite running or gym shoes. This sock stays in place thanks to a snug band fitting around the middle of the foot, and a mix of supportive fabrics. - Comfort mapping construction uses specific placement of fabric for ultimate comfort - Sock height from ankle: 19cm / 7.5-inches - Toe and heel protection - Optiline print design - Achille's tendon protection channel - Medium padding level - Medium insulation level - Highly moisture wicking technology - Designed for optimal comfort with fewer seams

Woolie Boolie 4" D-Logo Charcoal in a classic deep charcoal grey with white d-logo on the side of the cuff. The DeFeet Woolie Boolie is our cushiest sock, with a cult following for all the right reasons: woolie warmth, padded comfort, and durability. - Full padding / 3-season / Wool - Content: 70% Merino Wool, 27% Nylon, 3% Lycra - Care: Machine wash cool. Tumble dry low. No bleach, softeners, or harsh detergents. Engineered to be long-lasting, DeFeet products are sustainably manufactured within a local supply chain. Our wool goods are made from USA-grown Merino, traveling from Oregon to the Carolinas for processing and knitting. Our recycled poly is manufactured right here in North Carolina at Repreve from locally collected post-consumer water bottles.

Woolie Boolie 6" D-Logo in charcoal grey with a white d-logo on the side of the cuff. The DeFeet Woolie Boolie is our cushiest sock, with a cult following for all the right reasons: woolie warmth, padded comfort, and durability. Product Details: - Full padding / 3-season / Wool - Content: 70% Merino Wool, 27% Nylon, 3% Lycra - Care: Machine wash cool. Tumble dry low. No bleach, softeners, or harsh detergents. Engineered to be long-lasting, DeFeet products are sustainably manufactured within a local supply chain. Our wool goods are made from USA-grown Merino, traveling from Oregon to the Carolinas for processing and knitting. Our recycled poly is manufactured right here in North Carolina at Repreve from locally collected post-consumer water bottles. DeFeet socks come with a 5-year warranty. If you are not satisfied with your product, we will replace it.

Be very, very quiet, we've been on the lookout for rabbits. The cheeky design is sweet enough for your little one to wear every day, but don't burst this hike sock's bubble—it still packs a punch on the trail. The traditional ribbed cuff provides a little extra comfort where it counts, and Merino Wool always goes the extra mile. Just don't forget to take that left at Albuquerque. - 49% Nylon 46% Merino Wool 5% Lycra Spandex

Cushioned boot sock appropriate for cooler climates or hauling heavier loads. Dense resilient terry loop cushioning surrounds leg and foot. Elastic support at arch. Reinforced heel and toe for increased durability. USAF Safe to Fly Certified FR/NMND. - 62% Merino Wool 36% Nylon 2% Lycra Spandex

Not sure if dinosaurs ever went hiking, but chances are if you ask a kid, they'll know. The extent of knowledge some kids have about dinosaurs usually trumps their knowledge of how well a Merino Wool sock will keep them on their outdoor quest, but you should know. These socks can get wet, they can fight off odor, and ultimately, they are made to last a lifetime. And from the heat of a meteor exploding to an ice age, they are fit for everything. We guarantee that. - 52% Nylon 44% Merino Wool 4% Lycra Spandex

If you're out there, exploring nature with kids – you better be able to roll with it. Our advice for channeling sunshine and rainbows is to pack all the snacks, have fuss-free gear, and practice holding your breath while they test their limits and learn amazing life lessons. We can help with the gear. Grab a pair of our Merino Wool Van Wild kid's hiking socks and let the good times roll. Added bonus: less stinky feet + a strong hand-me-down game. - 53% Nylon, 44% Merino Wool, 3% Spandex Lycra

Aliens, bears and camels: We named this sock after everything you're likely to see on an un-average hike, and built it with enough cushioning to keep you cozy when the going gets weird. Features - Performance Fit: No slipping, no bunching, and no blisters. - Fine-Gauge Knitting: Unprecedented durability and our unique "put it on, forget it's on" feel. - Fast-Action Wicking: Pulls moisture away from skin. Fast-drying. - All-Weather Performance: Cool in the summer, warm in the winter. - Guaranteed For Life: No strings. No conditions. For life. - Merino Wool is fast-drying, breathable and odor-resistant for all-day comfort. - True Seamless: Undetectable seam fusion for an ultra-smooth, invisible feel. Specs - Boot socks sit mid-calf for added protection and warmth. A sturdy companion. - 60% Merino Wool 38% Nylon 2% Lycra Spandex - Additional warmth and protection are the signature characteristics of midweight yarns in the Hike/Trek category. Cushioning Details - Cushion in the Hike/Trek category features terry-loops under the foot, and in the taller styles reaches above the ankle for comfort and protection.

Warm and earthy or sleek and chic: The Bronwyn offers a multitude of options. The patterned design is fresh. And after multiple wears, the naturally antimicrobial Merino Wool actually keeps it fresh. Works for any style, any day, and comes in a Knee High, too. Features - Performance Fit: No slipping, no bunching, and no blisters. - Fine-Gauge Knitting: Unprecedented durability and our unique "put it on, forget it's on" feel. - Fast-Action Wicking: Pulls moisture away from skin. Fast-drying. - All-Weather Performance: Cool in the summer, warm in the winter. - Guaranteed For Life: No strings. No conditions. For life. - Merino Wool is fast-drying, breathable and odor-resistant for all-day comfort. - True Seamless: Undetectable seam fusion for an ultra-smooth, invisible feel. Specs - A classic, versatile height, crew socks hug the calf. A sock drawer staple. - 51% Nylon 46% Merino Wool 3% Lycra Spandexwomen - The lightweight yarns used in the Lifestyle category are designed for everyday use and feature a silky, low-profile feel. Cushioning Details - With added cushion underfoot and just below the ankle, cushion Lifestyle socks look business, feel like vacation.

We're not claiming these socks will stop crime or save babies, but they're guaranteed to hold their ground. Light and breathable with cushion that adds spring to each step, these naturally thermo-regulating and stink-fighting Merino Wool socks will give you that extra push when the going gets tough. Features - Performance Fit: No slipping, no bunching, and no blisters. - Fine-Gauge Knitting: Unprecedented durability and our unique "put it on, forget it's on" feel. - Fast-Action Wicking: Pulls moisture away from skin. Fast-drying. - All-Weather Performance: Cool in the summer, warm in the winter. - Guaranteed For Life: No strings. No conditions. For life. - Merino Wool is fast-drying, breathable and odor-resistant for all-day comfort. - True Seamless: Undetectable seam fusion for an ultra-smooth, invisible feel. Specs - The micro crew is a shorter, more concise take on the traditional crew-height. Peeks just above the top of a standard hiking boot. - 53% Nylon 44% Merino Wool 3% Lycra Spandex - The versatile lightweight yarns in the Hike/Trek category maintain a low profile in modern trail footwear and proper performance on multi-day trips. Cushioning Details - Cushion in the Hike/Trek category features terry-loops under the foot, and in the taller styles reaches above the ankle for comfort and protection.