3M has added several heel grounding straps to the Series 2050 line. These assemblies ground mobile personnel when they are in contact with conductive or dissipative flooring.
Additional Information
Three of these heel grounders (2056, 2056-M2, 2057) will not mark floors or shoes. They vary by the type of resistor, depending upon user need:
The 3M Non-Marking Shoe Grounder Assembly 2056 is designed to reliably ground mobile personnel when they are in contact with conductive and dissipative flooring.