Humans have been using wool to temper the bone-chilling cold of winter for thousands of years. And for all its incredible warmth and insulation, it's also a versatile fabric to work with. Tailors have used it for suits and sportcoats due to its strength, durability and shape retention, but as modern performance apparel, wool has no rival in synthetics. Whether traditional sheep's wool or lesser known sources like bison and yak, it's a breathable and insulating fabric, with moisture, temperature, and odor management — a wearable natural wonder. In thicker fabrics, from coarser yarns to the extremely fine silky threads that make the softest lightweight cloth, warm yourself (or someone you know this winter) with apparel and accessories that will have you comfortably warm, from head to toe.