Bison Trekker Socks Nature-built. Adventure-ready. Unmatched comfort. Meet the sock built the way nature intended; warm, breathable, durable, and wildly comfortable. Bison Trekker Socks harness the naturally extraordinary properties of American bison fiber to keep your feet dry, insulated, and comfortable in any season. Bison wool is uniquely soft yet resilient, offering the rare combination of lightweight warmth, moisture management, and natural odor resistance. Bison wool can absorb up to 30% of it's weight in moisture before it feels damp. Bison wool fibre is also naturally fire-resistant. Whether you’re logging miles on the trail, working long days outdoors, or braving winter temps at home, these socks rise to the challenge with quiet, dependable performance. No plastics. No gimmicks. Just genuine, bison fiber doing what it was created to do: protect, insulate, and withstand the elements. Why You’ll Love Them Exceptional Warmth Without Bulk: Bison down insulates even when damp Naturally Moisture-Wicking: Keeps your feet dry through sweat or weather Breathable & Temperature-Regulating: Comfortable from freezing mornings to warm afternoons Odor-Resistant: Wear more, wash less Soft, Durable Blend: Designed for long treks, long days, and long-term wear Made from American Bison Fiber: A true connection to the land and the iconic animal behind it Perfect For Hiking & backpacking Work boots & winter wear Hunting, ranching, fishing, and outdoor work Everyday comfort in cold climates Anyone who appreciates natural performance gear over synthetics Wrap your feet in the warmth and spirit of the American bison.Once you try bison wool, it’s hard to go back. 38% merino wool / 30% American bison down / 30% nylon / 2% Lycra spandex Size Chart:Shoe Size US Men US Women Small x 4.5-6.5 Medium 7-9 7-10.5 Large 9.5-11.5 10-12.5 XLarge 12-14 x