The Smartwool PhD Outdoor Light Mini features a light, half-cushioned outdoor sock ideal for light hiking, trail running and biking! Sold as a three-pair pack. Mini length. Ribbed cuff with ankle band for comfort. Contoured Flex Zone on topside. 4-Degree Banded Fit System construction for performance fit. Arch band at upper and lower instep for support. Ultra light WOW technology in High Density Impact Zones (forefoot/heel) to reduce shock and abrasion. SmartWool infused for moisture, temperature and odor control. Duroyarn reinforcement for added comfort and durability. Strategic Mesh Zones for maximum ventilation. Style Number: SW000586 58 percent wool, 40 percent nylon, 2 percent elastane Virtually seamless toe. Machine wash cold. Line dry. Made in the USA.