Under Armour Mens UA Run Launch Solo Liner Nylon^Spandex Imported The Under Armour&reg; UA Run Launch Solo Liner will take you the distance in your sprints or long runs. This brand is a member of the Sustainable Apparel Coalition. Sold as one-pair pack. Ultra-light sock built for running. Moisture Transport System wicks away moisture. ArmourBlock&reg; prevents odor. Seamless toe for a shafe-free performance. Strategic ventilation areas in high-wear zones. Anatomical call-out for left and right foot. 94% nylon, 6% spandex. Machine wash warm. Imported. ArmourDry&trade; for a moisture-wicking sock environment.