Anti-static heel straps can be used together with special conductive floor tile (not included) as part of a comprehensive ESD control program.
Heel straps allow freedom of movement without the disadvantages of being tethered to a ground cord. For effective ESD protection, two heel straps are recommended. One strap should be worn on each foot to ensure a continuous ground while walking. Velcro strips pulled over the top of the shoe secure the heel strap in place. The nylon ribbon (with conductive fibers) should be tucked into the sock to make contact with skin, or at a minimum tucked into the shoe to provide electro-static charges carried on the body with a path to ground.