Wrist straps are highly effective devices. They ground the wearer as do grounded ESD floors. For a wrist strap to work it must be connected to ground. To be grounded, the wearer must be tethered to the same ground connection as the wrist strap, inhibiting movement. ESD floors in combination with ESD footwear provide the same connection to ground as a wrist strap. Used properly, ESD flooring provides mobility without the restrictions of tethering.