Socks

The ultimate companion for hot summer hikes. Coolmax moves moisture away from your skin and dries fast while legendary Darn Tough construction brings comfort, durability, and fit to the trail. 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 the skin. Fast-drying. - All-Weather Performance: Cool in the summer, warm in the winter. - Naturally Antimicrobial: Repels bacteria and odor. - Guaranteed For Life: No strings. No conditions. For life. - COOLMAX is engineered to move moisture away from your skin and dry fast in warm conditions. - 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. - 39% Nylon 34% Coolmax Polyester 19% Acrylic 5% Polyester 3% 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.

Heat on the trail comes in many forms. From hot and humid to dry and searing to just plain old mean and nasty. This Coolmax air conditioner of a sock offers cooling comfort on even the balmiest of days. 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. - Naturally Antimicrobial: Repels bacteria and odor. - Guaranteed For Life: No strings. No conditions. For life. - COOLMAX is engineered to move moisture away from your skin and dry fast in warm conditions. - 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. - 55% Coolmax Polyester 37% Nylon 5% Acrylic 3% 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.

From the AT to the Pacific Crest Trail, our "1466" Hiker raised the bar on what the ultimate hiking sock needs to deliver. Each year we hear from countless thru-hikers that this rugged sock is the only option that truly takes on the rigors of the trail. Discover the trail legend for yourself. 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. - Naturally Antimicrobial: Repels bacteria and odor. - 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. - 61% Merino Wool, 36% Nylon, 3% 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.

This Micro Crew has earned a hallowed place in the hearts of many a through-hiker who demand more from a sock. Comfort, durability, and fit that never rests. 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 the skin. Fast-drying. - All-Weather Performance: Cool in the summer, warm in the winter. - Naturally Antimicrobial: Repels bacteria and odor. - 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. - 59% Merino Wool, 39% 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.

John Henry was tough as nails and probably didn't give a rip about being comfy while he worked. Then again he never had a chance to try our Work Socks. Discover comfort, durability and fit that works all day. 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. - Naturally Antimicrobial: Repels bacteria and odor. - 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. - 64% Merino Wool 33% Nylon 3% Lycra Spandex - The Work collection primarily features midweight yarns due to their versatility in all environments and ultimate protection. Cushioning Details - The entire Work category features cushion underfoot while select styles use terry-loops in the leg.

All the features you expect from our Light Hiker collection, but now in 1/4 sock height. Modest enough for a Victorian aristocrat, and equally familiar with dominating vast stretches of land, these ankle-covering socks offer a smooth cuff, legendary fit, and lightweight functionality that truly endures. Cushion extending up the Achilles adds targeted comfort and enhances the durability we guarantee for life. 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. - Naturally Antimicrobial: Repels bacteria and odor. - 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 - Sits just above the ankle. The "just right" height, 1/4 socks are great for low-cut hikers and running shoes. - 52% Nylon 44% Merino Wool 4% 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.

Preparing for a major hike can be heady stuff. Ultra durable, exceedingly comfortable, The Heady Stripe will make it in the pack every time. - 48% Nylon 47% Merino Wool 5% Lycra Spandex

Much like the precision, focus and dedication of the precarious tightrope walkers who balance high above ground, our Highline sock balances vintage looks, traditional midweight cushioning and moisture-wicking power of Merino Wool. This is a classic men's hiking sock in our signature Micro Crew height and ribbed leg that will not slip. You'll feel like a pro, so go ahead, you won't feel woozy when you look down. - 61% Merino Wool 36% Nylon 3% Lycra Spandex

Legendary Darn Tough construction for when "equipment failure" is not an option. Performance Trail Fit means no bunching, no slipping, no blisters. Side vents deliver superior breathability. - 61% Merino Wool 37% Nylon 2% Lycra Spandex

The sock that made a name for itself from the Pacific Crest Trail to the AT. "Must pack" durability meets undeniable comfort in a Full Cushion sock that absorbs the rigors of the trail. - 64% Merino Wool, 33% Nylon, 3% Lycra Spandex

The sock that made a name for itself from the Pacific Crest Trail to the AT. "Must pack" durability meets undeniable comfort in a Full Cushion sock that absorbs the rigors of the trail. - 66% Merino Wool 32% Nylon 2% Lycra Spandex

A touchdown-worthy fit, paired with spectator-level comfort—the Letterman men's casual sock is knit to our athletic performance specs, using high-loft, ultra-supple, twisted yarn. Making a big play or just kicking back, you can count on a light, soft feel minus any slippage or slop. - 61% Merino Wool, 36% Nylon, 3% Lycra Spandex

If you redesign one of the most popular socks in the line you better come correct. Increased breathability with mesh panels on top of the foot, a new smooth ribbing upper that stays put forever, and extended cushion over the Achilles – just a few heavy additions to one of the lightest hike socks out there. - 54% Nylon 43% Merino Wool 3% Lycra Spandex

Paying homage to a classic fly-fishing technique, the Spey Fly sock takes its name from Scotland's River Spey and inspiration from our own fly-fishing guru and Mill patriarch, Marc Cabot. He's the real deal. This lightweight lifestyle sock is too. It features terry loops knit under foot for cozy cushioning and our signature Merino Wool durable construction. While you may never reel in stream dolphins like Marc does, you can sport the same socks. - 51% Nylon, 47% Merino Wool, 2% Spandex Lycra

Some say it's hard to change their stripes. We went further and totally redesigned our Stride micro crew running sock for the lightest and smoothest fit-topped it off with performance arch support to reduce fatigue, flex windows for zero bunching and enhanced durability where our athletes need it most. Nah, wasn't that hard. - 52% Nylon 42% Merino Wool 6% Lycra Spandex

We took a post-worthy mountain view and put it on a Merino Wool hiking sock. This lightweight masterpiece has cushioning in all the right places and is knit for heavy mileage. We can't tell you where Sunset Ridge is located—that's inside beta for locals only—but feel free to try and find it. You've got an unconditional lifetime guarantee's worth of time to search. - 52% Nylon 45% Merino Wool 3% Lycra Spandex

Named after a 70's band that used to travel and perform at lean-tos along the Appalachian Trail, the VanGrizzle is seasoned for sure. Actually, we just made that up, but what's pure fact is how a Merino Wool trail sock is at home in the elements – so you don't have to grin and bear them. - 61% Merino Wool 37% Nylon 2% Lycra Spandex

The Willoughby hiking sock might be named after Vermont's most insta-spammable lake, but the real influencers are the sure-footed critters paddling across its buttery-soft, ribbed cuff. Dip into these lightweight Micro Crew height socks, knit with climate-controlling Merino Wool and cozy cushion underfoot, and you'll be trekking on without fear of the dreaded swamp-foot that can lead to blisters. - 53% Nylon, 44% Merino Wool, 3% Spandex Lycra

A tiger may never change its stripes, but we do. Our Women's Modern Stripe pairs a fresh design with the comfort and fit you expect from Darn Tough. Knit with ultra-soft Merino Wool and guaranteed for life—some things never change. 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 the skin. Fast-drying. - All-Weather Performance: Cool in the summer, warm in the winter. - Naturally Antimicrobial: Repels bacteria and odor. - 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: - Our no-show socks are the toughest socks you will never see. When your shoes are on this sock is gone. - 58% Merino Wool 40% Nylon 2% Lycra Spandex - The lightweight yarns used in the Lifestyle category are designed for everyday use and feature a silky, low-profile feel. Cushioning Details: - NO CUSHION - Lifestyle socks with no cushion offer the standard feel for daily-use, casual, and dress socks.

Drink from enough streams and you'll eventually get an explosive reaction. Look closely at this hike sock and you'll see what we mean. However, a blown-out seam should be the least of your worries. That's why the Number 2 is #1 when it comes to long-lasting toughness and active comfort. 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. - Naturally Antimicrobial: Repels bacteria and odor. - 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. - 63% Merino Wool 35% 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.

When the dawn's early light is your standard time, the Patriot is there for the perilous fight. Its supple but rugged micro crew-height blocks dirt, while redesigned flex windows and arch support ramp up performance and ease fatigue. All in a climate-controlling Merino Wool knit, so durable it's guaranteed for life and will leave you ready to lap all 50. 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. - Naturally Antimicrobial: Repels bacteria and odor. - 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. - 54% Nylon 40% Merino Wool 6% Lycra Spandex - For the ultimate like-it's-not-even-there fit and feel, ultra-lightweight yarns give our running socks the lowest in-shoe profile. Cushioning Details - NO CUSHION - Ultra-light feel and ultimate next-to-skin profile are staples of our no-cushion running socks.

Our Paul Bunyan Work socks roll up their sleeves and get down to business on even the coldest of days. Full cushioning gives these extra-tall socks an extra notch of comfort and warmth. 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. - Naturally Antimicrobial: Repels bacteria and odor. - 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 - Over the calf: the name says it all. The ultimate height for keeping the outside, out. - 68% Merino Wool 28% Nylon 4% Lycra Spandex - The Work collection primarily features midweight yarns due to their versatility in all environments and ultimate protection. Cushioning Details - FULL CUSHION - Terry loops knit throughout the entire Work sock are a full cushion of comfort and protection.

When we added Light Cushioning to our popular Good Witch model, the Phat Witch was born. Merino Wool makes them a year-round, all-weather favorite while Light Cushioning provides just enough bounce for all-day comfort and bliss. 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 the skin. Fast-drying. - All-Weather Performance: Cool in the summer, warm in the winter. - Naturally Antimicrobial: Repels bacteria and odor. - 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% Merino Wool 46% Nylon 3% Lycra Spandex - 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 a vacation.

Reel in some all-day comfort with a men's lifestyle sock that has the eye-catching allure of the Pop McFly. Subtle fly fishing graphics knit with super-silky Merino Wool that won't leave your feet hanging. 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. - Naturally Antimicrobial: Repels bacteria and odor. - 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. - 63% Merino Wool 35% Nylon 2% Lycra Spandex - The lightweight yarns used in the Lifestyle category are designed for everyday use and feature a silky, low-profile feel. Cushioning Details - NO CUSHION - Lifestyle socks with no cushion offer the standard feel for daily-use casual, and dress socks.

Running the full spectrum of comfort, durability and fit, the Prism will put anything in a positive light. Merino Wool Athletic crew socks will bend your perception with their wearability—wool for training, for hanging, or for anything the four seasons bring your way. Wear them straight through, since they're Guaranteed for Life. 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. - Naturally Antimicrobial: Repels bacteria and odor. - 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. - 56% Nylon 40% Merino Wool 4% Lycra Spandex - The lightweight yarns in the Athletic category deserve a decathlon pun based on their all-time performance in all active life choices. Cushioning Details - The cushion in the Athletic category underfoot offers rebound and comfort, and in the taller styles covers the ankle and Achilles for added protection and durability.

Nothing comes between you and the trail thanks to the secure cuff and blister-free fit of this zero-cushion 1/4 sock. Not even that pesky pebble that wants to wedge itself between you and your sanity. And when the trail turns to a scramble, the smooth, moisture-wicking Merino Wool will hold fast by your side. 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 the skin. Fast-drying. - All-Weather Performance: Cool in the summer, warm in the winter. - Naturally Antimicrobial: Repels bacteria and odor. - 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: - Sits just above the ankle. The "just right" height, 1/4 socks are great for low-cut hikers and running shoes. - 53% Nylon 40% Merino Wool 7% Lycra Spandex - For the ultimate like-it's-not-even-there fit and feel, ultra-lightweight yarns give our running socks the lowest in-shoe profile. Cushioning Details: - Terry loop cushion isolated under the foot for rebound in these incredibly light running socks.

When summer temps say no, these socks say hell-to-the-yes. Our ultra-lightweight no-show Coolmax running sock wicks moisture and keeps the air flowing for vegan-friendly feet, keeping you dry and cool and your strides blister-free. 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 the skin. Fast-drying. - All-Weather Performance: Cool in the summer, warm in the winter. - Naturally Antimicrobial: Repels bacteria and odor. - Guaranteed For Life: No strings. No conditions. For life. - COOLMAX is engineered to move moisture away from your skin and dry fast in warm conditions. - True Seamless: Undetectable seam fusion for an ultra-smooth, invisible feel. Specs: - Our no-show socks are the toughest socks you will never see. When your shoes are on this sock is gone. - 49% Nylon 48% Coolmax Polyester 3% Lycra Spandex - For the ultimate like-it's-not-even-there fit and feel, ultra-lightweight yarns give our running socks the lowest in-shoe profile. Cushioning Details: - Terry loop cushion isolated under the foot for rebound in these incredibly light running socks.

We swapped out Merino Wool for Coolmax in this 1/4 sock redesign. Allergic, vegan, whatever the reason, we're just happy you're getting after it. With trail-ready coverage, plush upper ribbing, performance arch support and targeted cushioning you'll tackle the most demanding miles comfortably. 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. - Naturally Antimicrobial: Repels bacteria and odor. - Guaranteed For Life: No strings. No conditions. For life. - COOLMAX is engineered to move moisture away from your skin and dry fast in warm conditions. - True Seamless: Undetectable seam fusion for an ultra-smooth, invisible feel. Specs - Sits just above the ankle. The "just right" height, 1/4 socks are great for low-cut hikers and running shoes. - 48% Coolmax Polyester 47% Nylon 5% Lycra Spandex - For the ultimate like-it's-not-even-there fit and feel, ultra-lightweight yarns give our running socks the lowest in-shoe profile. Cushioning Details - Terry loop cushion isolated under the foot for rebound in these incredibly light running socks.

Slip-on this ultra-lightweight no-show Merino Wool sock for blister-blasting protection and sweat-wicking power that you don't have to see to believe. Working hard behind the scenes, our most minimal running sock guards against dirt and stays put, so you can set your best pace—plain and simple. 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 the skin. Fast-drying. - All-Weather Performance: Cool in the summer, warm in the winter. - Naturally Antimicrobial: Repels bacteria and odor. - 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: - Our no-show socks are the toughest socks you will never see. When your shoes are on this sock is gone. - 54% Nylon 39% Merino Wool 7% Lycra Spandex - For the ultimate like-it's-not-even-there fit and feel, ultra-lightweight yarns give our running socks the lowest in-shoe profile. Cushioning Details: - Ultra-light feel and ultimate next-to-skin profile are staples of our no-cushion running socks.

Slip-on this ultra-lightweight no-show Merino Wool sock for blister-blasting protection and sweat-wicking power that you don't have to see to believe. Working hard behind the scenes, our most minimal running sock guards against dirt and stays put, so you can set your best pace—plain and simple. 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 the skin. Fast-drying. - All-Weather Performance: Cool in the summer, warm in the winter. - Naturally Antimicrobial: Repels bacteria and odor. - 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: - Our no-show socks are the toughest socks you will never see. When your shoes are on this sock is gone. - 54% Nylon 39% Merino Wool 7% Lycra Spandex - For the ultimate like-it's-not-even-there fit and feel, ultra-lightweight yarns give our running socks the lowest in-shoe profile. Cushioning Details: - Terry loop cushion isolated under the foot for rebound in these incredibly light running socks.