Overview: This is the United By Blue Bison Wool Socks collection. This really is the ultimate American sock. It’s a sock that’s made of bison down. So it’s not only made in America, but it’s made of the ultimate American ingredients, which includes the American bison down, which is warmer than wool and also provides ample padding and support for all your outdoor activities. It retails for $38 and it comes packaged in a beautiful, craft-paper box that is made in Wisconsin. Check out the Ultimate American Sock at United By Blue's website UnitedByBlue.com and other retailers.