The basic use for it there is no sleight of hand necessary.
And even with the basic use of it it has a very powerful effect. I just got mine Monday and for the first time tried it out today on Thursday. I practiced it only one time before testing it out on my wife and I blew her mind. I know if I do the exact same trick to her again it will blow her mind again. And when I did this trick to her I was sitting beside her on the couch so this can be done that close up. I used the simple routine that Nick teaches you in the beginning and it is just awesome. I just wish this was made out of the same material that they make some of the other envelopes which makes it very difficult to tear but for the price that you pay for this you have a lot of powerful effect and just a few bucks of investment

There are a number of envelopes with similar functions and features, but the Worker’s Envelope has a (for lack of a better word) toggle-able nature that makes it more versatile than most other solutions I’ve seen. There are a lot of great concepts on the tutorial video. Some of the ideas make use of a “dummy” billet, but if you make your dummy billet slightly less dumb — by making it into one of the outs from Nick’s favorite routine — you’ll be set up to go in multiple different directions. This versatility makes it a perfect everyday carry.

The black color is useful in disguising part of the method, and it also makes the contents pop with contrast through the window, but I think it makes it look a bit out of place. I don’t think people will have seen something like this before. But it will be easy to make my own version. It still isn’t super common to see a coin envelope with a window, but I think it would fly to say, “I have a coin envelope with an address window” along the lines of Docc’s justification thinking. The color matching what people have seen before will help it feel more like a natural prop. This isn’t a criticism of the product as-supplied — I can appreciate why Penguin chose to make it in black. But for me personally, I’ll feel more comfortable making a version in Kraft brown or Manila color.