Made to skip, sprint and always move, the Pacer is an ultralightweight sock with cushion that gives your paws blister free support for those herky-jerky twists and turns on the single track. Backed by Merino Wool construction, its the ultimate all terrain sock for casual trail joggers and adventure runners alike. | Darn Tough Socks Pacer Micro Crew Ultra-Lightweight Socks | Size Small