Sleep Sock
sleep sock can be worn in shoes
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.

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 70 reviews
J.S. (Scranton, US)

I bought a pair of sleep socks for myself for sleeping this winter and tried them out even though it's summer. The fit was great. It being summer I didn't last long with them being so warm. I like them so much I bought a pair for my father who always has cold feet due to health issues including swollen ankles. He loves them so much I bought him a second pair! My shoe size is 11.5 wide and the XL fits perfectly. My father wears a size 11 regular and he likes the XL.

Zenaida (Mountain View, US)

Love them!

Carol (Kirkland, US)
Sleep socks

These socks are so soft and comfortable. They are perfect for cold winter nights! I even got a pair for my hubby! 😊

Bruce R. (Longview, US)
Sleep Sox

I ordered these Sleep Socks hoping “something” would work for me. My restless legs had become so bad the sheet and covers would end up on the floor most every morning or twisted up like a thick rope. I would also wake up way too often and think I must need to use the restroom, so I would go 3, 4 or 5 times each night. Since I woke up so often I would also realize my back hurt, my neck hurt, my shoulder hurt, and I was cold because my wife drops the AC about 3 degrees each night. I would end up in the recliner in a warm room and she would sleep through the entire thing and poke fun at me in the mornings.

Anyway … I have had these Sleep Socks for about a week. The sheets have remained intact, I have slept through the entire night on four occasions, and I only ended up in the recliner once because of my wife’s thermostat problem!


5 out of 5 stars with a Double Thumps Up.


Donald R. (Orlando, US)

Sleep Sock

CW (Anchorage, US)
A good sleep sock

I used these as my "sacred socks" while camping in the rain for about a week (meaning they stayed in my tent, and were only used for sleeping so that they stayed dry). They were wonderful for that. I haven't tried walking around a lot in them, but they are cozy.

John A.K. (West Lafayette, US)

These are super soft, comfortable and warm but not to warm. Lots of room for the toes.

Ida E. (Seattle, US)
Better than slippers

The husband and I wear our sleep socks every day. We just bought a 2nd pair but are still trying to wear our our first pair. They're fabulously warm and comfortable.

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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