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Extreme Cold Socks

Tested in The Toughest Conditions

Loved by snowmobile and dog sled racers, trusted by Canadian construction workers and Lake Superior ice fisherman, Thorlos padded Extreme Cold weather socks are the choice for those who play or work long hours in the cold. Alpaca socks – known for their warmth - are no match for our highly protective worsted wool-THOR-LON® blend over-the-calf padded socks.

Allergic to Wool? We recommend our Hunting Cold weather padded sock, which does not contain any wool. Click this link to see and read about the product.

“Socks, like other important gear, can make or break a day of ice-fishing or hunting deer. These socks allow me to put on just one pair and stay warm. I like them so much; I gave a pair to a trapper friend of mine, a bird hunter friend of mine, and my brother in northern Wisconsin. Each of them has thanked me several times and have inquired about how to order more.”  John F.


Built for Warmth and Comfort

Thorlos Extreme Cold Weather socks have been constructed to:

            Keep your feet warm…

Keeping your feet warm in frigid conditions requires the right thermal fabric. Wool for warmth is a given, but not 100% worsted wool. In a well-insulated boot, your feet will perspire. To keep them warm, it’s absolutely essential to blend the wool with our proprietary THOR-LON yarn; the blended fabric wicks perspiration away, keeping feet dry (and the skin of the feet healthier) during 8 to 10 hour days. Dry feet are warm feet. If your feet get wet, they will get cold more easily, which can start a chain reaction that  chills your entire body, causing you to shorten your work or play day and possibly putting your health (or life) at risk.

            Stay up all day long…

Out in the cold you need socks that will stay up over your calves all day long. If you’re wearing gloves and protective pants, you’re unlikely to be able to tug your socks up during the day. That’s why Thorlos Extreme Cold weather padded socks are made with a 4-inch long ribbed spandex knit secure-fit top. The top snugs comfortably to your calf, staying in place all day long.

            Keep your feet and legs comfortable…

Thorlos Extreme Cold weather padded socks are made with our engineered clinically-tested padding placed exactly where you need it. As always, you’ll find padding on the balls and the heel of your feet. It’s also been added where your feet require protection from your boots. You’ll find Thorlos clinically-tested padding across the top of the toes for protection and thermal insulation, across the top of the feet, around the ankles and all the way up the front of your legs to protect and insulate your shin.

All of this padding translates into:

-          blister reduction

-          pressure-point protection

-          more effective wicking of foot perspiration

And this translates into Profound Comfort®.


“Best socks I wore in my life, recommend for those who want high-quality socks really - really worth every penny. Not only are these warm blister free socks, they really support ankle & calves muscles. The double thick layer running up the shin is wonderful, as well as everything else about this sock. We have several different types of Thorlo Socks, but this is the one for cold weather motorcycling.” Mona P.


“The title say it all - great socks for warmth and comfort.”  Randy B.


“Besides being very warm for my cold feet in winter, they are super soft and comfortable.”  James H


“I just love these. All of the cushioning is great and in the right places.”  Elizabeth B.

Curious but not yet convinced whether Thorlos CTPS can help you address your foot pain? We invite you to try your first pair free…just paying shipping and handling.

Click this link to see our FIRST PAIR FREE OFFER.

Endorsed by the Alpine Institute  

If you are looking for additional assurance, we are proud to share that our Extreme Cold padded foot protection has been named “Guides Choice” by the American Alpine Institute. We hope we can add you to the list next!

American Alpine Institute Guide's Choice


“No other socks should even be considered during winter.”  Joseph P.


Thorlos Ultra-Light Padded Socks Make an Excellent Liner Sock

Formerly known as our Liner padded sock, our newly styled Ultra-Light Hiker is an excellent liner sock if you prefer this kind of additional protection. It’s available in two lengths:

            Over-the-calf:  ULHO    

            Crew length:  ULHX      



THORLO stands behind all its foot-protection products. Our 30-day brand promise: Your feet will feel better or your money back®!



Thorlos are proudly made in the USA. To learn more about our craft and commitment to retaining our manufacturing in the USA, we invite you to watch our video entitled “An American Brand Story.”



Reviews for Thorlos EXTREME COLD

  • 5 out of 5

    Style: EXCOU

    Extremely comfortable, very well made!

    10/16/16 | By

    These socks are the best I have ever owned. I'm not exaggerating. They are incredibly comfortable, and fit my feet like they were custom made for me. Fit was true to what was claimed on the website. They do not shrink at all when I wash them. I bought the over the calf type, and they are not too tight like other brands I have tried. They also provide excellent support of my leg. I was a bit apprehensive of spending this much on a single pair of socks, but I pulled the trigger and bought several pair. I am so glad I did, and will be buying more. In my opinion, this is a case of getting what you pay for. Worth paying a little more to get what you want. As for warm, I just got back from elk hunting camp where the night temps were below freezing, and my feet were warm and comfortable. Keep in mind if you decide to purchase these socks, that they are thick, and so your boots better have a little extra room. In summary, extremely nice socks that I have already started recommending to friends and family.

  • 5 out of 5

    Style: EXCOU

    Best sleep socks ever!

    06/15/16 | By

    My feet get so cold at night.....even in the summer!!!! This solved the problem. I am sure I will be wearing them more this Winter.

  • 5 out of 5

    Style: EXCOU

    Not cold enough to try yet.

    03/02/16 | By

    Cannot give a fair evaluation as the temps have not been cold enough since purchase. they look good.

  • 5 out of 5

    Style: EXCOU

    awesome support and warmth

    02/29/16 | By

    my feet feel wonderful - the padding holds up all day and I work 12 hours shifts

  • 5 out of 5

    Style: EXCOU

    They are No Sweat!

    02/27/16 | By

    I feel like they are giving me a big warm hug.

  • 5 out of 5

    Style: EXCOU

    I only wear Thorlo

    02/18/16 | By

    I have worn Thorlos for years,mainly basketball and tennis socks. I ordered these extreme cold socks to hunt with my grandson. They are wonderful and keep my feet warm while sitting in the woods. Will definitely order more!

  • 5 out of 5

    Style: EXCOU

    Ultimate Socks

    02/18/16 | By

    These socks r tremendous! Never have to pull them up. Thick, comfortable and warm. Best purchase ever!

  • 5 out of 5

    Style: EXCOU

    Needed serious snowshoe socks.

    02/11/16 | By

    This was my first pair. I bought 3 and shared 1 with my snowshoeing buddy. We both liked the socks a lot. They are very comfortable and warm. My foot even stayed warm as my snowshoe boots fell apart on my last hike.

  • 5 out of 5

    Style: EXCOU

    Perfect solution to running in the cold

    02/06/16 | By

    I am thankful I was advised to look into these socks by a medical practitioner and fellow athlete. I am a coastal person now living in the midwest and my feet were suffering. Couldn't get comfortable running. Now I am running in comfort in the sub freezing weather. They are THICK so had to loosen the laces a bit, but happy to do so because of the results. note: I have Reynauds (my cold extremities that take too long to thaw). These socks have been the RIGHT solution.

  • 5 out of 5

    Style: EXCOU

    Great for hunting or playing golf in cold weather

    02/04/16 | By

    Really comfortable and warm