Targeted Compression and anatomical design provide an unmatched Custom-Like Fit with protection from blisters; iWick Fibers wick moisture to keep feet cool and dry, while providing superior durability for intense runs and workouts; High density cushioning provides cushioned comfort without the bulk; Technical Mesh Ventilation creates more breathability to keep your feet dry in various conditions; Higher Heel Tab protects the heel in higher athletic shoes while still staying hidden; Heel Hugger 2.0 Technology adds improved silicone tape placement in the heel; The Perfect Toe (No irritating toe seam); 94% Nylon 6% Spandex; Machine wash cold, tumble dry, no bleach or fabric softeners; For best results, wash socks inside out