** Due to popular demand and a limited supply of bison fiber, this item is currently on Pre-Order. Order now to receive your sock by August 2016.
The iconic United By Blue sock from bison down that will keep your feet warm and dry all winter long. Compared to wool, bison down is warmer, better for moisture control, more durable and easier to care for.
For every product sold, United By Blue removes one pound of trash from our world's oceans and waterways.