um.. nm. i just read the descript..
when it's really really bad, (rain) we just wear rainpants. they aren't pretty and
form fitting, but with nice tights underneath, you stay warm and dry.
caution:
if you really work up a sweat, these things backfire because they don't breathe.
Wear rainpants when you have to slog and you aren't going to be doing any warming hills.
ps, why would you measure the waste? can't you just flush it?