Ultra-light socks that you hardly feel - ideal for maximum comfort, freshness and a sure fit throughout the day. Ultra-thin and lightweight construction - For a sockless feel. Locked-in Fit Construction - Holds the sock securely on the heel without rolling it up. Mesh panels on the instep - Provide targeted breathability under load. Quick-drying material – Effectively wicks away sweat and keeps feet dry. Odor Control technology - Helps reduce odor even when worn for a long time.