the ridge minimalist slim wallet for men - rfid blocking front pocket credit card holder - aluminum metal small mens wallets with money clip (black) the ridge the ridge is a minimalist, rfid-blocking wallet. the dual track design creates an expandable inner compartment, designed to remain as slim as possible while holding 1-12 cards. built for durability and functionality, the ridge uses premium materials and offers a lifetime guarantee. see our other listings for alternative color, material, and design styles.