Please googling necessarily even know what that means. In the description on Amazon was only: "contains antibacterial equipment". I have tested a set, really only because of the activated carbon, the parts were after half a day really wet, probably because the lower part is rubber-like coating. In order to breathe nothing. Buy and exchange often better then normal soles (! Without biocides). I had once ordered two sentences that go back thanks to Amazon's consumer-friendly behavior - this I give 5 star ;-)
