Harley-Davidson Mens Skull Concho Bi-Fold RFID Genuine Leather Wallet HDMWA11474. Men's Skull Concho Bi-Fold Wallet. Made of high-quality black Genuine leather with a smooth texture. RFID Protection. Interior features: 6 credit card, ID window, cash slot and zippered coin pocket. Size: 4.25" x 3.5". Manufacturer Part Number: HDMWA11474.