The ultimate trail running, mountain biking or warm weather day hiking sock • 4-Degree Banded Fit System for all day performance fit • WOW Technology in High Density Impact Zones to reduce shock & abrasion • SmartWool inside for moisture, temperature, and odor control • Duroyarn™ reinforcement for added comfort & durability • Strategic Mesh Zones for maximum ventilation • 75% Wool, 24% Nylon, 1% Elastic |