BEST-IN-CLASS WOOL SOCKS MANUFACTURED IN THE USA We put our feet through hell, so our socks must meet the highest standards-no blisters, no friction where the sock meets the shoe. The Merino Wool Challenge Sock - Ankle was built to take on your toughest workouts. These socks won&';t wear thin or lose shape. They&';ll keep your feet dry, and even after days of use, they don&';t stink. They work great with the Mackall, Ballistic Trainers, and Rough Runner training shoes. They&';re unconditionally backed by our Scars Lifetime Guarantee and proudly made in the USA. Socks are final sale and not eligible for returns or exchanges.