Thread title says it all. None of this slim-fit crap, cause I know those come in 20k/20k, but do legitimately tight pants with good waterproofing (15-20k) exist? Not even saying I want to buy them, I just haven't seen any. And yes, I searchbarred.
If you tuck from here, you probably won't overshoot it. Buuutttt I wouldn't go from here, cause you'll probably overshoot it.