But, just when you thought fashion couldn't get any weirder, one brand has created what might just be the most bizarre trend yet.
Intuitively, many of us might imagine that when you look at something with your eyes, signals travel to your visual cortex and then you have the conscious experience of seeing it, but the reality is far weirder.
If you think this is weird, hold on tight, because it's about to get weirder.