The Foot Pads are a pair of conductive plates you stand on, with one foot on each - that's what completes the circuit, so both are needed rather than one at a time. The sensation travels up through the soles and into the calves.

Used in the morning they may help get the muscles moving and support circulation before the day starts. After a long day on your feet or a workout, they suit winding down instead. They're slimline and non-stick, so they store flat and wipe clean.