- Smartwool PhD® Run Ultra Light Low Cut running socks contain soft, targeted padding placed where runners need it most: on the ball and heel of the foot. These socks are low-cut height making them an ideal balance of protection and comfort. View our Smartwool Socks Collection.
Material: 48% Merino Wool, 47% Nylon, 5% Elastane.
PhD®® built for Performance in the Highest Degree.
4 Degree™ Elite Fit System for a dialled, performance-oriented fit with flex zone at ankle joint.
Indestructawool™ technology features a patent-pending construction method for exceptional durability and comfort.
Mesh ventilation zones provide optimum moisture management and maximum breathability.
Shred Shield helps reduce wear from toes.
Virtually Seamless™ toe for enhanced comfort.
Made in USA of Imported Yarns.
Care: Machine wash warm inside out. Don't bleach, iron, or dry clean. Tumble dry on low. Click here to learn more about washing your wools.
Sock Height: Low Cut ( 5.7cm overall height).
Cushion: Ultra Light Cushion is non-cushioned for maximum performance in close-fitting shoes.
Fit: True to the sizes recommended in the size chart.
Team Thoughts: I love these socks for running and they are very comfortable. These keep my feet from getting too hot or cold depending on the season.