Losing your wallet can be extremely distressing, but this useful keyring hideaway means that even if that happens, you'll have enough backup cash available to get you home. The idea is that you fold up a note (if you're in the UK, £20 is probably ideal), slip it into the Secret Keyring & forget about it until you need it. Then if you ever lose your wallet, or just plain run out of money at a really bad time & can't get to a cashpoint, you've still got enough for a taxi. Although the general idea is that you forget about your Secret Keyring until you need it, keeping it with you means that you'll also have a useful reserve to fall back on if you see something you just have to buy. Discrete, watertight, tough & extremely useful, the Secret Keyring is a handy fallback that no one should be without!