Not that I care but when did those black mesh trainers as per running shoes and some light weight work shoes become acceptable as formal attire? (example
https://www.underarmour.co.uk/en-gb...ged_impulse_3_running_shoes/195253288647.html in plain black) been to a couple of work meetings/courses recently where the instructions was strictly formal attire (nominally black shoes, black trousers, plain shirt as a minimum, expectation suit) and noticed several people wearing them and at a funeral service a few days ago likewise saw several people wearing them with suits.