Darn Tough Socks Guaranteed for Life meaning they're socks with our lifetime warrantyDarn Tough Socks Guaranteed for Life meaning they're socks with our lifetime warranty

Unconditionally Guaranteed for Life

If these aren’t the longest lasting socks you’ve ever owned, you can return them to us for another pair. No receipt needed, just the pair in question.

Our warranty process is easy ... 4 steps.

Remove old socks from foot to warranty them

Step 1: Remove Socks

Issue discovered, decision to warranty socks made.

Fill out the lifetime warranty form

Step 2: Online Form

Complete the Warranty Claims Form (link below). It’s quick and easy.

Icon of a computer with an email arriving

Step 3: Check Email

Once your claim is approved, we'll email you that there's a credit on your account.

Icon showing socks being put into a cardboard box

Step 4: New Socks

Order a new pair on darntough.uk. Your new pair of lifetime guaranteed socks will ship for free.

We Knit a Longer Lasting Sock

When we say our socks are durable, it’s about more than wearing through – it means they will remain comfortable, with a performance fit, day after day. Our warranty data helps us improve, and we knit a better sock.

Darn tough long lasting socks we covered under our lifetime warranty
darn tough women's we replaced since they're socks with lifetime warranty
quarter crew socks covered by the darn tough warranty for life
micro crew hiking socks we guaranteed for life to be the most durable socks
kids socks are guaranteed for life too, and we covered these under our warranty
darn tough men's socks covered by the lifetime warranty program

Our Guarantee Means Everything

The unconditional guarantee ensures we maintain the standards we set. Does it drive us to be better? Absolutely.

pink no show socks covered by our unconditional guarantee
mountaineering socks we replaced because these are socks guaranteed for life
mountaineering socks we replaced because these are socks guaranteed for life
green and gray socks returned to the darn tough warranty program
Brown hiking socks unconditionally guaranteed for life
fun everyday socks returned for a lifetime guarantee warranty

Things We Don't Cover

We get it, the idea of “unconditionally guaranteed” could be interpreted differently, but we guarantee our work, and our socks. Hike to the Moon, and we will cover that kind of wear, but if you leave them there, we don’t want to assume responsibility for that. 

We don’t need a receipt, we don’t need a reason – although we do like to see them, and if you want to share a story, we are always curious. In the meantime, these are the most common questions we can answer:

Dog eating a sock, something our lifetime warranty doesn't cover

Animal Destruction

We can only speak to the sock itself, not dogs or other means of devastation brought on by not wearing the socks on your feet. They are not trailer tie downs.

A bonfire with socks among the flames - we don't recommend


Merino Wool is naturally flame resistant, but fire can be avoided. They will survive a brief encounter with flame, but they won't save you pain from a fire walk. Nor will we cover that.

A sock disappearing into a magicians hat

Lost in Laundry

We only warranty pairs, not singles. There's still a good chance they are hiding in the trouser leg or sleeve. Regardless, loss is not something we can prevent on our end.


I literally only own Darn Tough socks. I kinda want to see how good their customer service is, but their durability prevents me from it.

Stephen F.

I recently had a fit issue a certain sock style. I contacted Darn Tough, and they stood behind their guarantee (it's not just words). I could not have been more pleasantly surprised by their excellent customer service. The new socks fit perfectly. I love them!

Tanya P.

Darn Tough socks have lasted longer than any sock I have ever owned. I did recently have a pair develop some thin spots and holes in high wear areas and Darn Tough replaced them no questions asked.

James S.

I love Darn Tough Socks. The online replacement is easy. I am amazed by the Lifetime Guarantee and will continue to buy them and replace them.

Mary M.

Best socks ever and the lifetime guarantee is real. I sent a 5 year old pair back because some stitching came loose, I got a credit for another pair. BOOM just like that.

Danny B.

Can't wait to take advantage of your lifetime guarantee, but so far our socks just won't wear out. I think we have a pair that is at least 10 years old and worn often. They just keep going strong.

Tara S.
A pair of darn tough socks with holes that are ready to be sent to our warranty team

FAQ: Lifetime Warranty Program

Our socks are guaranteed with a lifetime warranty to be the most comfortable, durable, and best fitting socks you can buy. In a nutshell, if you wear a hole in them, we will replace them free of charge, for life. Things that generally are not covered — disappeared in the dryer, the dog ate them, too close to a campfire, theft by friend or foe, etc., etc. However, all claims made in good faith will be considered. 

Please note, socks purchased as seconds or irregulars are not covered by our warranty.

It is easy to file a warranty claim with us online. Please complete this form to start your claim.

We strive to process your claims within 2-3 business days of receiving your claim. During peak season, it may take us a bit longer.

We reply to all warranty claim forms within two days of receiving them. If it’s been longer than two business days and you haven’t seen a response, please check your spam or junk folder.  

If there is nothing in your junk mail, please reach out to our support team.  

While it’s pretty darn comprehensive, our Guarantee does not cover sock loss, and we don’t sell single socks. Our Guarantee applies to socks that have not met expectations relating to comfort, durability, and fit.

No, when a customer alters the sock in any way, through resizing or dyeing, they have voided our warranty. Dyes are chemicals that can adversely affect the materials we use to make our socks, and resizing socks damages their structural integrity.

Yes, please submit all pairs on a single warranty claim. There is a field on our warranty form to note how many pairs you need to claim.

No sock registration required. All you need when filing a warranty claim with us is a complete pair of Darn Tough socks. We knit our name on all our socks, so we know where they came from, no receipts or proof of purchase required.

We unconditionally guarantee our socks for life. If they’re not the most comfortable, durable, best fitting socks you’ve ever worn, return them for another pair. In return, we ask that you submit any warranty claims in the country from which they were purchased. You can find the international warranty contact information by country here

If you are unable to do so, we’re happy to work with you directly to process your claim. Please keep in mind, however, that in cases such as these customers are responsible for all international shipping-related costs.