The Silver performance running socks provide a lasting hygenic environment for the foot 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. The high heel tab helps prevent the sock from slipping into your shoe and minimizes exposure to blisters.