As many of you keep telling us, our Sleep Socks were one of our favorite products ever! For the first time in 2 years we now have them back in stock!
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 added 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.
They were warm, comfortable, 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 bindoff top of sock, less restriction on ankle
- Natural brown Yak fiber (no dyes)
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 gearMaterial Composition
Yarn Base Composition
70% yak down / 30% nylon (imported)Overall Composition
55% yak down (imported) / 42% nylon / 2% Spandex / 1% polyesterCustomer 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.

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.