Sleep Sock
sleep sock can be worn in shoes
Sleep Sock
Sleep Sock
Sleep Sock
Sleep Sock

Sleep Sock

Regular price$ 42.00

  • 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.
Shopify (our website provider) has a cool new feature and we thought this would be a great way to test it out. 
No coupon code needed!  just add to your cart, and the discount will show up at checkout. The more you add, the more the price goes down 
Buy one pair, save 10% automatically   
Buy three pair, save 15% automatically   
Buy four or more pair, save 20%  yes, automatically 
*does not combine with other discounts
and the best part, you can mix and match sizes!  Offer ends Nov 30, 2023

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 96 reviews
Hazel S. (Chapel Hill, US)

My feet are cold except for a few days in July. These sleep socks are so warm.
If I get my feet warm, I can go to sleep faster.
There have been a few nights that my feet got too warm.....has never happened before

Roderick T. (Oil City, US)
Sleep socks

Love them, two pairs one for my wife the other for me !!! Getting older these socks are a perfect fit for us !!! The feet are toasty and the body will follow !!! Not too loose not too tight just Right and so soft too !!! We highly recommend these Yack sleep socks !!! Roderick T and Sandee

Helen C.
Toasty tootsies

Loving my socks-they’re comfortable and I may have to get more!

Paul O. (Frankfort, US)
These are great

I had been wearing golf socks to bed when I saw these offered by The Buffalo Wool Company, so no stranger to sleeping in socks. These are a huge improvement.

Stacy F. (Hebron, US)
The Best!

These are great! My feet feel warm and comfortable the minute I put them on. I had no idea how much better I would sleep. Just the Best! Thank you, BWC

Marsha J. (Papillion, US)
Warm Feet

I bought these for my husband. He has terminal cancer and his feet were always icy cold. He wears them night and day and they keep his feet comfortably warm.

Torre (Kensington, US)
love these socks!!

These are so comfy! i like that they are not as confining - great for sleep or slipper socks! and they are super warm

Katherine M. (Manahawkin, US)

Soft, warm and cozy!

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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