Who Makes Darn Tough Socks? Part 1

The people who make darn tough socks at the mill

We get asked a lot about Mill tours. We don't currently have them, but if you've ever wondered who makes Darn Tough socks and what our process is, we did want to give you an inside look.

A lot goes into making the best sock. You need the right materials, right knit, right pattern. Most importantly though, you need the right people. It’s the “who” behind every aspect of our sock knitting process that makes us so confident in their quality, we choose to guarantee them for life.

Let us introduce you to the people who make Darn Tough socks. You might learn a bit about sock-making along the way. 

Owen — Product Line Manager

Owen's smiling face out on a hiking trail

Owen’s been at Darn Tough since 2016. When he’s not thru hiking the AT or playing classical viola (harder than it sounds since not many composers choose the viola as their hero instrument), he’s at the Mill in Northfield, VT working with our research and development (that’s R&D) team.

R&D is where the sock journey begins. Owen and the product team are always researching. He then uses this research to make recommendations, thinking seasons and even years into the future.

What new socks should we make next? What changes should we make to our current socks to make them that much better? What colors should be using? These are all questions Owen and the other R&D team members help answer.

The sock wall R&D uses as they come up with new sock ideas

I think it’s a great balance of analytics and creativity,” says Owen. “We’re constantly asking ‘why’ and the answer to ‘why’ needs to account for both.” Our socks can’t just look good, they need to be functional and meet the needs of sock-wearers everywhere. It doesn’t hurt if they look good, too.

Once R&D feels the vision for socks coming together with some solid designs and styles, we have to turn that design into something our knitting machines can understand. Not every idea will make it past this first knit down, because what works on a computer doesn’t always work in real life (at least, not the way you think it will).

Among elements that can go wrong, Owen names color, pattern, and of course fit. “We never launch a new style without wearing it. Wear, wear, wear. Wash, wear again.”

To find out just how the sock is going to look and fit in real life, Owen and his team hand their sock ideas over to the Samples Group.

Before we leave Owen though, just gotta mention he’s one of the honored few to have a sock named after him. VanGrizzle isn’t just an awesome sock with a bear on it… it’s also his trail name. No wonder it’s Owen’s favorite design.

The VanGrizzle sock with bears on it

Clay — Samples Programmer

With 11 years under his belt, Clay knows a few things about brook fishing (one of his favorite activities) and sock making. By a few, we mean he can walk you through the entire process from sock bitmap to knitting machine functions. And he’ll do it with a smile, answering all your questions along the way.

When R&D sends the Samples Group their idea, Clay asks, how do we make this idea real using the tools we have? He turns that idea into a bitmap (looks like a virtual paint-by-number, actually is a super complex guide for every single stitch in a sock, dictating the color, material, and other details like cushion).

But not having the right tools or program doesn’t stop Clay. R&D wanted make socks with a striped heel and toe, something we’d never done before, so Clay built the program from scratch.

This pioneering is what he loves about his job. “Doing things that nobody else wants to do. That’s what our team does.” If you love all the stripes covering the Animal Haus socks, don’t forget to thank Clay for saying “I’ll try it.”

The Animal Haus fox socks on a woman's feet

With the bitmap done, Clay and the Samples Group puts the sock pattern into a program and knits a real-life sample on one of our knitting machines.

They watch out for red flags at every step, passing that information back along to R&D to make tweaks as needed. R&D spends days and months wearing the samples, making sure they live up to the Darn Tough standard of uncompromised comfort, durability, and fit.

Close up look at the knitting machines we use to make our socks at darn tough

Thanks to Clay and his team, problems are caught early and fixed, or the sock is scrapped. Not every awesome idea makes it through to production (though many do).

Don — Purchasing Manager

Once a new sock has made it through the process we can say, yes, we are making this sock. That’s when Don and his team step in. Don’s been the purchasing manager at Darn Tough for 4.5 years now, and his job is to find the best materials and get them from wherever they are in the world to our Mill in Northfield, VT. No easy task.

When asked what he loves about his job, Don had a couple answers. First, he loves working with our supply partners and maintaining those relationships. But he also just loves Darn Tough:

“What I like is the product and the people. I’ve worked in manufacturing for a long time. I love working for a manufacturer that makes the quality of product I can stand behind and use in my daily life being a mountain biker, runner, snowboarder, and hiker.”

He still has the socks he wore to hike Machu Picchu in Peru, and every time he sees them, they remind him of that hike. “We make such a kick-ass product.”

Don and his wife standing on Machu Picchu

We can’t make a great product without great building blocks. Don and his team make sure the Mill has the yarn they need, when they need it, and with the highest possible quality. They also help R&D look into new materials, seeing if they’re up to par with our quality standards. The glow-in-the-dark nylon didn’t make the cut (sad day, we know), but the space-dyed yarn did.

Don is also helping us as a company to take better care of the environment with sustainable materials. In recent years, that meant finding and changing all our Merino Wool yarns to 100% Responsible Wool Standard certified wool.

Rows of Merino Wool yarn cones at the mill where we make darn tough socks

Now, he’s repeating the process for our nylon yarns. Every day, he and his team are matching colors for recycled nylon, with the goal of moving 100% of our yarns to sustainable options.

The COVID19 pandemic slowed the process as supply chains around the world felt the impact, but they haven’t stopped, and Don is proud of the work his team has done and continues to do to source the highest quality materials.

Michael — Line Supervisor

Aka Big Mike. This dude is tall. And despite his British accent, he has a love for Vermont that is unsurpassed. After a few years at Darn Tough, he headed off to Florida only to find his way back to Vermont and the Mill. He’s been here 5 years now, grooming dogs when he’s not keeping an eye on the Mill.

Mike standing next to his car

Mike is the first shift supervisor at the Mill, overseeing all our knitters and knitting machines. To get all our socks out the door in the right sizes, colors, and quantities takes a lot of scheduling. Mike manages that schedule, no small task when you consider our goal of knitting over 60,000 socks per day. Yes, per day. You all wear a lot of socks.

With the program from Samples and the materials from Purchasing, socks are ready to be knit on a large scale. Knitting is the very heart of the sock-making process. Knitters are responsible for keeping the machines stocked with the right yarns, including making a list of the yarn they’ll need for each day to complete the scheduled work.

A knitter at the darn tough mill holding a sock

Knitters also keep an eye out for issues – a broken needle or thread makes an unacceptable sock. Knitters hand-inspect socks at the machine to catch these issues and correct them in real-time, while also making sure that the socks leaving the knitting room are top notch.

Each sock has its own personality, which can come out in the knitting process. “The 1466 runs like a peach,” per Mike, but a new sock might not, challenging Mike and his team to spot and troubleshoot issues. Mike’s favorite thing about his job is working in a fast-paced environment where he gets to know people, how they work, and help them work even better by passing along his knowledge.

Adnan — Master Technician

Sometimes a knitting machine has an issue that’s more complicated or too difficult for the knitter to fix. That’s when it’s time to call in a technician.

Adnan working on a knitting machine

With an impressive 23 years at Darn Tough, Adnan is what we call a Master Technician. There’s not much this man doesn’t know about our knitting machines. A knowledge he’s happy to humbly share, while having some fun too. “I’ve been here 23 years, and I’m still learning.”

One of his favorite parts of work is having fun with his coworkers. “I try to treat everyone with respect and a little fun.” When not at work, he enjoys spending time outdoors with his family. At home or at work, there’s a high likelihood he’ll be wearing his favorite sock, the Light Hiker Micro Crew.

Adnan holding his favorite sock, the Light Hiker Micro Crew hiking socks

When it comes to fixing the knitting machines, Adnan encourages the technicians he’s training to look for the simple solutions first. With over 270 knitting machines to keep up and running, every day presents its own unique challenges, and he’s always looking to help others improve their skills and expand his own.

When new socks are coming into the Mill, Adnan sets up the program on the machine, double-checking that all looks good, and does a small pre-production run of the socks before moving the socks along to full-scale production. If any issues come up, he takes them back to the Samples Group and works with Clay to find out where the problem is – with the machine, the program, or the material.

A sock on a knitting machine at the darn tough mill

The problem-solving never stops, and every person at every step of the sock-making process are committed to making only the best socks, something Adnan takes pride in.

“What we want to make is the best in the world, and we are.”

Follow on Down the Road

That's as far as we'll go today, but the sock-making process is far from done, and we have a few more people we'd like you to meet. What happens next takes place down the road at our Nantanna spot. Check back later to see where a Darn Tough sock goes from here, in our upcoming post.


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