Quiver by Kevin Chow

Quiver is a revolutionary switching device that is disguised as a standard looking coin pouch. Granting you the power to switch any small object for another automatically. The second the wallet closes, it's DONE. The most unbelievable part of Quiver is the fact that the spectator can open or close it themselves. They'll find nothing.

Quiver Plus is 1.5 cm larger allowing for switching of larger items like keys or bills.