The ideal balance of protection meet with the Smartwool PhD Run Light Elite Low Cut sick! Sold as a one-pair pack. Low-cut length sits at ankle. Light elite cushioning offers optimal impact protection with targeted cushioning at the ball and heel of the foot. 4 DEGREE Elite Fit System employs two elastics for greater stretch and recovery. ReliaWool technology delivers long lasting wear. 200 needle construction provides the highest knit density without compromising its light weight. Strategically-placed mesh vents for temperature and moisture management. Achilles tab helps reduce the likelihood of irritation. Virtually seamless toe. Run-specific fit. 51% wool 46% nylon 3% elastane Machine wash inside out on a warm gentle cycle. Tumble dry low lay flat or line dry. Made in the U.S.A. from imported yarn.