The Finisterre Original Sock delivers the close, familiar fit of a cotton sock with the natural durability and breathability of wool. Woven from a wool blend with a touch of stretch, it's built to hold up through repeated daily wear, season after season, with a ribbed stretch top that keeps it in place all day. What Our Gearhead® Experts Are Saying:"I've worn through cheaper wool socks in a single winter, but these are still holding their shape after regular rotation. They don't feel bulky in a boot the way I expected a wool sock to."