Water polo. Your associations?
These are mine: tight, skin tight, very tight, extremely tight one-piece shiny slippery water and hands repellent swimsuits, rubber trunks, and (of course) perfectly shaped athletes (but still, mostly swimsuits ;-). A paradise for swimsuits fetishists.
Water polo is an extreme sport with lots of fighting (see video below). And the only piece of clothes the under-water-fighters are wearing is a water polo special swimsuit. Hence the requirements. It must be skin tight and slippery to avoid grabbing, it must sit in place when grabbed to avoid “peeling off”, it must be robust enough to avoid tearing when grabbed and pulled (see photos below).