51% DRYNAMIX® RECYCLED POLYESTER, 45% NYLON, 4% ELASTANE Imported Constructed with ultrafine high-tech performance yarns to create the sheerest, lightest performance no show running sock Reinforced microfiber toe and heel along with unique heel design creates a more formed, extra-deep heel pocket Proprietary Drynamix moisture wicking fibers keep feet cool and dry, and features reinforced microfiber mesh ventilations panels Hand-linked, seamless reinforced toe maximizes comfort, high heel tab helps prevent sock from slipping and minimizes exposure to blisters Left/right foot construction method ensures the perfect fit