Biological protective wear. CBRN, NBC suits. I know it's part of the whole rubber, latex fetish genre. Funny thing is (maybe it's the reason why this comes to mind first) when I was in my younger 20's, I started collecting NBC suits as I thought they were bizarrely unique, psychologically weird to look at, and somewhat scarey. Little did I know at the time is that there was a whole fetish thing associated with them, or well at least with the heavier, older models, like the Zodiak suit. I still enjoy unpacking them once in a blue moon and slipping one on. I have that same unique feeling like Adam Savage has whenever you put on a specialized suit of some sort. But I'm never like, WoAh! I'm getting a boner in this thing!