Pop-Out Credit Card Holder for Men & Women – PU Leather Card Wallet. This Pop-Out Credit Card Holder is made up of metal RFID vintage aluminium box and PU Leather. This slim wallets are small on the outside but surprisingly big on the inside. Designed and made in Holland using traditional methods and locally sourced leather & aluminium, this ...Mu-metal. By far, the most popular type of material used in these specialty accessories is mu-metal, which is a human-made alloy that contains iron, copper, chromium, molybdenum, and up to 80% nickel. ... With the ability to produce a magnetic field around your credit and debit cards, as well as your passport, RFID readers won’t be able to ...credit card: It can also be used as a credit card holder to protect your health. for unisex: This credit card holder is for the wallet, but also a great way to keep your cards and cash in one place. for men: Rfid readers have a strong protective role, can block rfid readers from scanning in the wallet, and the access control cards are all covered.Nov 15, 2016 · But we highly rmend that you seek for RFID wallet which takes advantages of premium metal or synthetic (similar to some credit card holders) Size and Design – These days, there is a variety of dimensions in the market; all you have to do is to select the one that best suits your taste. Before purchasing, set a plan to use your wallet.