As the review below says this does require some practise to make it smooth but it's worth practising because it is an impossible effect and a very good one. Worth buying and investing time in.

I like the idea of this effect... if performed smoothly, it's genuinely baffling. The problem is, with the quality of this construction, it's very difficult to perform it smoothly.

The negatives: the wallet looks and feels cheaply made. Besides the aesthetics, this makes loading and unloading the envelope more awkward than it ought to be. My biggest problem is that the initial set-up feels very insecure to me. The cards ought to be clipped or held in the gimmick some way, rather than just sitting there. It seems like there's a very real danger of accidentally ending up with more than one prediction in the envelope... or even worse, completely expossing the method as you withdraw the envelope.

Like I said, good idea, but without modification, the out-of-the-box construction doesn't provide me with enough confidence to perform this as-is.