EffectThis wallet is business card size that changes from the spectator's card to yours!No strapNot Z folded walletOpening side is the same in any timePossible to have a spectator open walletHigh qualityNo technique, Easy to useInstructions include two routines.Comes with: Trick Wallet and detailed instructions.Dimensions Approximately 3 1/2" x 4 3/4" (9cm x 12cm)