The Butterfly Card from American Express is a foldable card that doubles up as a keychain carrier. It is currently available to all their Gold Card members only, adding weight to their motto that membership has its privileges. The keychain-card concept plays on the idea that most people carry some sort of keychain, so having some purchasing ammunition to the keychain is a no-brainer. You can use it like a standard card by exposing the magnetic strip only while the other half is enclosed within the case. So don’t leave home without it if you want some envious stares!
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