They gave me these ESD footstrap things you put on your shoes, because I wasn't actually processing returns but was the roving tech responsible for fixing the test stations, so I walked around a lot. I still don't know how/why those things would supposedly work for ESD as they didn't even make contact with skin.
https://scs-static-control-solutions.blog/2018/01/12/an-introduction-to-foot-grounders/
As I understand it: the strap makes an electrical connectiong to your body via sweat through your sock and discharges it through the grounded floor.