Last year I lost my Visa card in London :-(
Because I used it for Tube and bus I kept it in the front pocket of my trousers and at one point I also had my phone in the same pocket. I guess it followed the phone out of the pocket and dropped to the floor/pavement.
I have googled for holders, but they are more suited for ID cards.
Does anyone know of some sort of holder that can hold ONE credit or Oister card and with a line or lanyard or a ring to attach a line?