Run your next obstacle course, marathon or mountain trail with the comfort and protection of the Thorlos Outdoor Athlete Sock. These innovative socks are crafted from moisture-wicking Thorwick Cool Fibers and designed for intense outdoor sports. Enjoy maximized breathability with ventilation panels in the toe and instep, and thanks to the ankle/foot transition gusset, you can forget about uncomfortable bunching, wrinkling and falling down. Light density padding in the ball and heel protect high compact zones, and compression-grade ankle and arch support protect plantar fascia and fight fatigue. The quarter-length, reinforced top keeps out dirt, pebbles and twigs so you can focus on improving your PR.