Darn Tough Socks are made in Vermont. Their backyard is the perfect testing ground to make the finest Premium All Weather Performance Socks. We ski, snowboard, hike, bike and run in the most unforgiving climate in the lower 48. It is under these conditions that we design, test and manufacture our socks. Darn Tough's custom count, shrink treated Merino wool enhances the comfort and durability that outdoor enthusiasts have come to expect from this fiber.