United by Blue Ultimate American Sock - Red Large

Keep your feet winter-ready with knee high socks made using bison down, the insulative coat that grows under a bison's outer layer of hair. It's warm, soft, antimicrobial and moisture-wicking, so your toes stay cozy when the temperatures drop. Made from a super-warm blend of merino wool, bison down and synthetic fibres. Reinforced heel and toe areas add durability. Flat toe seam for a hotspot- and chafe-free wear. Bison down is sourced from a farm in Alberta. For every product sold, United by Blue removes one pound of trash from the world's oceans and waterways. Small fits US women's 6-9, US men's 5-8. Large fits US women's 10-12, US men's 9-13.