Card holder aluminum, bought to protect any credit card hacking-related fraud (contactless payment card). It measures 11 x 7.5 cm and consists of six PVC divisions inside. The opening and closing system seems very solid. I'm happy with my purchase, although that could not choose model. The provider has been seriously and delivered on time. The delivery time is long enough, it is better to take in advance: I ordered this item on 18/11, I received the 10/12.