Provides lasting antibacterial running sock performance with fibers encapsulated in Silver ions; Ensures perfect fit with compression sock arch support bands and extra-deep heel pocket; Keeps feet cool and dry with Balega's proprietary Drynamix moisture wicking fibers, plus specially constructed, reinforced microfiber mesh ventilation panels; Maximizes comfort with hand-linked, seamless, reinforced toe and high heel tab that helps prevent the sock from slipping into your shoe and minimizes exposure to blisters