Have the card case made of stainless steel have long been in use in the purse and also as a protection, if I only once got the credit card in the host bag. Had otherwise often times the problem is that the card is broken or the magnetic stripe on the ticket does not work anymore - with the envelope so far "Toi Toi Toi" ... The card looks even after months still almost like new ... The shell is damn stable compared to the plastic parts.
