Sleep Sock
sleep sock can be worn in shoes
Sleep Sock
Sleep Sock
Sleep Sock
Sleep Sock
Regular price $ 42.00 Sale price$ 35.00 Save $ 7.00

  • In stock, ready to ship
  • Inventory on the way

  • Made in the USA
  • Base Yarn Composition: 70% yak down / 30% nylon (imported)
  • FREE Standard US Shipping on orders over $100.
  • In-stock orders placed before 10 AM CST Mon-Fri will ship same day.

As many of you keep telling us, our Sleep Socks are one of our favorite products, ever!  

The sleep sock was designed to leave unrestricted circulation around the cuff - a top rising softly just above the ankle with no extra spandex ... just the natural stretch of the terry loop construction.  It adds the needed insulation to keep your blood supply in the feet comfy .. in bed, walking, or even with shoes or slippers. This version of the sleep sock is a yak/nylon yarn blend.

Slipping into a cozy pair of ultra-soft, wicking, comfortable, natural fiber sleep socks after a long day can be one of the most luxurious feelings. Not only do they help regulate body temperature by wicking away moisture, but socks made with natural fibers can also help prevent odors and fungal infections, making them a great choice for those with sensitive skin. Additionally, the softness and breathability of these socks can help promote a more restful night's sleep, as they won't irritate or constrict the feet.

They are warm, comfortable, and durable and we have it on good authority that they actually saved several marriages.


  • Stretch terry loop construction on inside, flat knit outside
  • Loose cuff bind off the top of the sock, less restriction on the ankle
  • Natural brown Yak fiber (no dyes)
  • Imported yarn
  • Knitted in USA

Sock Sizing

Socks should fit as well as any of your other garments. The heel should sit on your heel and not under it as in a sock too small, nor half way up your Achilles as in a sock that’s too large. Socks should be flush against your foot with no extra material sagging. The toe seam should lay flat across the top of the toes.

Sock Heel at Your Heel
The sock heel should sit on your heel, not under it or above it.

Flat Toe Seam
The toe seam should lie flat along the top of your toes, not above or below.

Taut Across the Foot
Socks should be taut across your foot with no sagging material. If you wear a wide shoe size (E+), consider sizing up.

Shoe Size US Men US Women
Small 3 – 6.5
Medium 7 – 9 7 – 10
Large 9.5 – 11.5 10.5 – 12.5
X-Large 12 – 14

Care Instructions

Machine wash cold, lay flat or hang dry.

Once you are ready to clean your gear, follow a few simple steps to care for your favorite socks, beanie, and gloves.

How to Care for your favorite bison fiber gear

Material Composition

Here at The Buffalo Wool Co., our yarn bases for all our gear is (and will always be) natural fibers. This means that the internal structure of your socks (the parts that touch your skin) will be made from bison fiber, merino wool, mulberry silk, and other 100% natural fibers.

The overall composition (the parts that touch your skin plus everything else) will include other materials like nylon or polyester. This is done to make the sock more durable and ensure that your socks work (and play) as hard as you do.

Yarn Base Composition

70% yak down / 30% nylon (imported)

Overall Composition

55% yak down (imported) / 42% nylon / 2% Spandex / 1% polyester

Guide to fiber composition

Customer Reviews

100% real reviews from real customers.

We partner with a third party reviews platform to ensure the integrity and authenticity of our customer reviews. We cannot edit review ratings and do not curate our reviews.

Customer Reviews

Based on 161 reviews
Jennifer N. (Los Angeles, US)
Warm and cozy

I don’t always sleep in my Sleep Socks but when I do my feet are warm as soon as I put them on. I don’t know how they stay on but it’s quite wonderful that they do, keeping me cozy all night long. They’re so soft I actually don’t feel them on my feet.
Thanks for keeping me warm and cozy.

Brent S. (Detroit, US)
Sleep sock

These socks are warm and I’ve been using them in place of bedroom slippers all winter.

Michael D. (Oklahoma City, US)
Baby Soft

I really like these!! So much so, I bought pairs for my girlfriend, Mom, and sisters. Funny, they don’t like sleeping in socks, but adore these. I guess you got it right!! Thanks much Ron and T.

Kathy K. (Porter, US)
Sleep socks

Love the sleep socks! Keep your feet very warm. So glad I got them.
We live in the country, have propane heat so keep it down at night. No more cold feet with these socks.

Roy L.M.I. (Los Angeles, US)
Perfect gifts

Gave a pair to each of my adult sons in Jan. One an avid skier in Tahoe other an Adventure Racer all over the world. Feedback from both……ideal use for both …after a race. Warm, easy to hand wash in rural settings, durable, and attractive.

Brenda D. (Olive Branch, US)
My toes are warm and happy!

I purchased the sleep socks along with my purchase of Christmas gifts. I love these ankle socks! They keep my feet warm, with the added benefit of actually staying on my feet! I’ll be back for more! Very excited to find the buffalo wool products.

Jeff O. (Pekin, US)
Sleep Sock

Excellent heavy duty material but ankle socks don’t give me enough coverage. Personally would love to see in an over the calf style.

B (Los Angeles, US)
Best socks - my daily wear

These are thick and work perfect as a slipper to wear around the house. I also sleep in them - and they work great for that need too. Very durable. Keeps my feet warm. Would buy again in a heart beat.

S&D Spinning Mill, Millbury, MA, USA

Designed from the Ground Up

The Dearnley Family has been running S & D Spinning since the 1800s. This is one of the last large scale wool mills left in the U.S. and they are absolutely crucial to us keeping our production here in the U.S.

Read more about how we spin our American bison yarns

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