Featuring Light Elite cushioning, these socks contain targeted cushioning placed only where runners need it most, on the ball and heel of the foot. We packed these socks chock full of smart features like our 4 Degree® elite fit system, women’s-specific mesh ventilation zones, and a Virtually Seamless™ toe. A low cut height is that ideal balance of protection and style. PhD® Built for Performance in the Highest Degree Women's Specific Fit Narrower profile provides perfect women's specific fit 4 Degree ™ Elite Fit System Uses two elastics for greater stretch and recovery to keep the sock in place Indestructawool™ Indestructawool™ technology features a patent-pending construction method for exceptional durability and comfort Mesh Venting Mesh ventilation zones provide optimum moisture management and maximum breathability Light Elite Cushioning Maximum impact protection with targeted cushioning on the ball and heel of the foot. Designed specifically for runners. Features Sock Height: Low Cut 2.25" overall height Virtually Seamless™ toe Made in USA of Imported Yarn: 52% Merino Wool, 45% Nylon, 3% Elastane Care Machine Wash Warm, Wash Inside Out. Do Not Bleach. Tumble Dry Low. Do Not Iron. Do Not Dry Clean.