Furze debuted the shoes on YouTube with an upside-down stroll across a rafter in his garage. The shoes have two home-made magnets mounted to a pair of Vans.
Rather than pay upwards of "80 quid" for industrial strength magnets, Furze explained in an accompanying how-to video that he could create the same supercharged forces by salvaging microwaves from a local dump, clipping transformers out of the back and running an electrical current through them. Moments later, he's hanging upside down by his feet, shouting, "Oh my god, that is holding my whole weight."
The rest is history, of sorts.