The Thin Running socks protect feet much better than other thin running socks because they are built with our race proven drymax Dual-Layer Sweat Removal System. They are flat knit (without terry) and are just slightly thicker than our Hyper Thin™ Running socks. Made for use in cool to hot conditions, keeping feet dry and comfortable. Our True Fit™ Size mark on the toe makes laundry day sorting easy. Our Active Odor Control helps keep socks odor free.