Find your sock
Pick the fiber first. Bison and yak are the warmest socks we make, merino is built for active days, and hemp blend is for every day. Then pick the height.
4.8 from 1,308 sock reviews
- Mix any 3 socks, save 15%
- Free returns and exchanges
- Bison socks knit in the USA
- 1 lb of trash removed per product
Start with the fiber
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Bison
Merino wool, American bison
BisonShield™ fiber, salvaged from the waste stream. As warm as our socks get, and longer-lasting than yak.
- Warmth
- Breathability
- Feel
- Plush and dense
- Best season
- Fall through early spring
- Best for
- Cold days, boots, winter outdoors
- Heights
- Crew, boot, quarter, low cut
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Yak
Wool, yak
Our softest socks yet: softer than any fiber we’ve found except cashmere, and just as warm as bison.
- Warmth
- Breathability
- Feel
- Our softest, low bulk
- Best season
- Fall through spring
- Best for
- Cold days, sensitive skin, dress shoes
- Heights
- Crew, boot
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Merino
Merino wool
Warm when it’s cold, breathable when it isn’t, and slow to hold odor.
- Warmth
- Breathability
- Feel
- Fine and soft
- Best season
- Year-round
- Best for
- Hiking, active days, trail to town
- Heights
- Crew, quarter, low cut
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Hemp blend
Hemp with organic cotton or wool
Breathable, hard-wearing socks for every day.
- Warmth
- Breathability
- Feel
- Soft and sturdy
- Best season
- Year-round
- Best for
- Everyday wear, sneakers, lounging
- Heights
- Crew, boot
Warmth and breathability are our own ratings, based on each fiber and how our socks in it are built. We list each sock’s primary fibers. Our yarns also include other fibers, such as recycled polyester, nylon and spandex, for stretch and durability. Full composition is on every product page.
Pick your sock
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Bison, best seller
The Ultimate Bison Wool Sock
Crew, full cushion
Primary fibers: Merino wool, American bison
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Bison, best seller
Bison Wool Trail Sock
Crew, cushioned sole
Primary fibers: Merino wool, American bison
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Hemp blend
The Hemp Yarn Varsity Hiker Full Cushion Boot Sock
Boot, full cushion
Primary fibers: Wool, cotton, hemp
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Hemp blend
The Soft Hemp Mountain Crew Sock, 2 pack
Crew, cushioned, 2 pairs
Primary fibers: Hemp blend
No socks match that combination.
What people say about each fiber
My feet have always turned numb in the cold. Then I discovered the Ultimate Bison Sock. They are SO warm, and they are comfortable too (no itch). My feet don’t turn numb anymore! I bought SEVEN pairs between this year and last year.
Socks are soft and really warm. Wore them when it was 6°F out, and had no problems.
I work on my feet every day in all four seasons. I got these socks for winter but will wear them straight through the year. They don’t keep my feet warm or cool, they keep them regulated. And that is exactly what I was looking for.
These socks work perfectly with all my winter boots. They keep my feet warm when it’s cold out and most importantly my feet don’t sweat when they get warm.
Sock questions
Which socks are the warmest?
Bison and yak, and they’re equally warm. Bison lasts longer. Yak is our softest sock, softer than any fiber we’ve found except cashmere. For the coldest days, pick full cushion at crew or boot height.
Which socks are best for sensitive skin?
Yak. It’s our softest sock, softer than any fiber we’ve found except cashmere, and it’s gentle on sensitive skin. The Yak Everyday Crew is low-bulk and fits dress shoes. Merino is fine and soft too.
Which socks work for warm weather or workouts?
Merino low cut and quarter socks breathe well and are slow to hold odor. Hemp blend socks are light and breathable for everyday wear.
What does “primary fibers” mean?
We list each sock’s primary fibers. Our yarns also include other fibers, such as recycled polyester, nylon and spandex, for stretch and durability. Full composition is on every product page.
Is there a discount when I buy more than one pair?
Yes. Mix any 3 socks, save 15%. Put any three of our socks in your cart, in any fiber, height or size, and 15% comes off each one automatically. No code needed. A 2-pack counts as one sock.
How do the sizes work?
Most of our socks come in two sizes, S/M and M/L. The exact shoe sizes differ a little from sock to sock and are listed on each product page. Exchanges are free.
How do I wash wool socks?
Machine wash cold and tumble dry low. Merino and yak can go a few wears between washes. Our wool sock care guide has more.
Where are your socks made?
Our bison socks are knit in the USA. Our merino socks are made in China.
What if they don’t work out?
Returns and exchanges are free. The Ultimate Bison Sock also comes with a 30-day wear-them guarantee: wear it for a month, and if you don’t love it, return or exchange it.
One pound of trash out of the water, every time.
Try the Ultimate Bison Sock for 30 days. If it isn’t the warmest sock you own, send it back, even worn.