Ultimate American Sock

By United By Blue

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A blend of bison down and merino wool makes the Ultimate American Sock a warm, cushy, and durable way to keep your feet snug and dry. Completely Made in the USA—from the North Dakota materials to the Pennsylvania packaging—these socks help our country’s environment, too. For every pair sold, the company cleans a pound of litter from our nation’s waterways.

  • Made in the USA: Philadelphia, PA; Uxbridge, MA; Osage, IA; and ND
  • Materials: 56% merino wool, 24% bison down, 18% nylon, and 2% spandex
  • Care: Machine wash inside out in warm water. Tumble dry, low. Do not bleach, iron, or dry clean
  • Bison down is softer than cashmere and warmer than wool
  • Features a flat toe seam, reinforced heel, and padding for support—built for comfort and durability
  • Great for winter—keeps feet warm and dry
  • 1 x 1 spandex rib knit welt and spandex knit throughout leg
  • Unisex socks
  • Dimensions: Fits men's sizes 9-13 or women's sizes 10-13
  • Weight: 0.269 lb.

93 Reviews (4.7 out of 5 Grommets)

Sorted by Rating

ultimate sock

3/10/2016 by Dolores M

Very warm and fluffy, but HUGE! I may have to re-gift them.


Great socks; not quite ready for prime time

2/23/2016 by Janey

These socks are super cushy and warm, without being overly hot. However, the seller really needs to offer a range of sizes. I have very large feet (11.5-12W) and the one size available is too big for me. (I'll wear them anyway, though -- and maybe wash them on a little higher temperature than recommended, in hopes that they'll shrink a bit.) And, while I love the concept of bison down, doesn't the animal have to have feathers to have down?More > < Less


Warm but pricey and a hole developed

5/15/2018 by Susan

My husband LOVES the warmth of these socks—when his feet get cold, the endless sneezing begins. Unfortunately, a hole wore into the heel aspect of one of the pairs even wearing them outside. This happened in less than one winter season. Too pricey for this but when the grommet was contacted, customer service refunded the entire price.More > < Less


ultra thick

12/2/2017 by Pam

I returned these socks because they were so thick they could only be worn as slippers basically.



12/16/2016 by Cheri

I'm giving these as a gift

Items 86 to 90 of 93 total

**Keep your feet warmer than bison in a snowstorm.**

About United By Blue

Bison Built

When you think of bison, you probably picture large, furry animals roaming America’s plains. What you might not know is that bison down is soft, warm, and wicks moisture, too. What better way to use this wonder fiber than in thick, cushy socks that are American from materials to mission?

The Ultimate American Socks are plush, warm, and even microbial—meaning you can wear a pair a few times before washing. Padded, reinforced toes and heels add to their durability.

Every step of making these ultra-American socks takes place in the U.S., starting with bison ranched in North Dakota. From there, the yarn is spun in Massachusetts and knitted in Iowa. The packaging is made in Pennsylvania.

United by Blue is so committed to our country that these socks even benefit American conservation. For every pair sold, they remove one pound of litter from our waterways.

Every time you pull on these cozy socks, take pride in preserving American manufacturing as well as our shining lakes and streams.