The Dakar Wave Metal Leather Card Holder is a high-tech minimalist wallet that focuses on speed of access and digital security. It is characterized by its rigid structure and the signature textured "Wave" leather finish. RFID Protection: The aluminum chamber acts as a Faraday cage, blocking all RFID/NFC signals to prevent "electronic pickpocketing." apacity: * Metal Chamber: Holds 5 to 6 cards (depending on whether the cards have embossed/raised lettering). Leather Pockets: Usually features 1 or 2 extra slots on the leather exterior for a driver's license or a few folded banknotes.