Total sales: $90 million
The Aluma Wallet is an aluminum wallet described on its website as "indestructible" and "totally trendy." Water-resistant and available in either leopard or zebra print patterns, it allows its owner to hold cash and credit cards in a compact manner. But wait, there's more!
"It resists RFID [radio-frequency identification] signals that have been used to steal people's identity," Israni said. "So if you have your credit card in this particular wallet, your identity is safe." The Aluma Wallet has sold 8 million units.