It’s a constant quest ’round these parts to find the thinnest, lightest wallet. Mark Winstein was tired of his thick, leather wallet and not happy with the duct tape, Tyvek, and rubber band “slim” wallets he’d seen, so he designed the Butterfly Wallet. Made from super-thin ripstop nylon, it weighs only 0.2 ounces (less than the weight of a quarter) and is 3mm thin when empty. Its design is simple: classic wallet style with a full-length bill slot and three card slots that hold multiple cards. It’s available in six colors for $14.95 each.