Engineered Foot Protection

ST Inside
ST Outside
  • Constructed with THOR•LON® blended with thermal fibers for extra insulation , and superior softness, resilience, durability and moisture-wicking for drier, warmer, better feeling feet.

  • Cushioned instep and arch for a better fit, more support and less pressure on the feet for a more comfort.

  • Low profile toe seam won’t rub or irritate feet.

  • Ventilation panel for extra moisture control and breathability

  • Unique padding specifically designed for extreme cold weather activities, clinically shown to reduce blisters, pain, pressures, and moisture for maximum protection.

See the Outside
Beyond Socks

For Feet That Hurt

During or after your activity

Learn More
Beyond Socks

For Feet That Do Not Hurt

During or after your activity

Learn More

Your Feet Will Feel Better Or Your Money Back®

Snow Extreme Cold socks

Clinically-Tested Padded Socks For Feet That Hurt

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

    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

  • 5 out of 5

    Style: EXCOU

    Love the feel and cushioning

    01/28/16 | By

    I have no cartilage between the bones in my feet and am always searching for socks with lots of padding. These are wonderful

  • 4 out of 5

    Style: EXCOU

    Very thick and warm

    01/21/16 | By

    Almost too thick for my shoes but I love how warm they are.

  • 5 out of 5

    Style: EXCOU

    The best padded sock for boots worn all day

    01/21/16 | By

    Feet bathed in soft luxury while trapped in military/duty boots. Wear them up to 20+ hrs a day.

  • 2 out of 5

    Style: EXCOU

    They don't stay up.

    01/19/16 | By

    They fall down so they will never get worn and eventually thrown out!

  • 5 out of 5

    Style: EXCOU

    Warm and comfortable

    01/18/16 | By

    My primary purpose was warmth watching an occasional football game in the cold. Sitting four hours at a temperature of about 45, cold for Southern California, the comfort and warmth was a vast improvement over previous experiences. I would recommend these to anyone.

  • 5 out of 5

    Style: EXCOU

    Long Lasting

    01/16/16 | By

    I've been a Thorlo customer for over 20 years, the reason for that is their soft as air feel you get when you put a pair on, the other reason is Thorlo's last an average of 3 years for me, I have never had a pair of socks last me that long before I started wearing Thorlo's. Bottom line is you cannot find a better pair of socks and believe me at 70 years old I've tried them all.

  • 5 out of 5

    Style: EXCOU

    warmest socks ever

    01/10/16 | By

    these are the cats ass for warm feet in freezing temps