The Wingback Key Cache is designed to enhance and complement your everyday carry, while discreetly adding functionality. It neatly clips onto your keyring and contains a secure compartment to store banknotes and an “if found” note in case your keys go missing. Having emergency cash tucked away will spare your blushes if you forget your wallet. It could even save your bacon on your travels – a backup $100 note can get you out of a lot of tricky situations. Machined from a solid bar of aerospace-grade stainless steel, the Key Cache has been designed to last for decades, not months.

Fits GBP, EURO, USD and every other note we have tested (the maximum size we have tried is 160mm x 82mm)