Here are some posts from themagiccafe:
I just downloaded this and watched it. Love it! I live in Florida and flip flops are abundant down here, so I'll definitely be getting quite a bit of use out of this. Especially this summer. Cool method, and seems like it will be very easy to handle. Another winner from Dan Hauss in my book.
I just received a copy of this, watched it, and I have to say I like it a lot. In the summer, I hardly ever wear shoes. I'm almost always wearing flip flops. This trick is gonna be awesome to perform. - Matt Mello
I have this and I like it. Flip flops are very common this time of the year and this can appear to be a nice impromptu effect. Of course, like with most Dan Hauss effects, there is a little construction to be done but it's nothing major. After the one time setup you are ready to go.
Personally I have no problem borrowing someone's flip flop and doing this. You can link your flip flop to some other object if the thought of handling a stranger's grosses you out. Or just carry some hand sanitizer. What makes this effect strong is the fact that it's so unexpected to do magic with flip flops. - Matt