As I am writing this there no bicycle trousers for urban rain.

It is ordinary, water proof, breathing, rain weather trousers; but totally water proof where the seat is (otherwise water might get pushed through the pants); more sturdy around the knees and front part of the thighs as those parts get more worn. Front thigh should be totally water proof too.

The rest can be the usual breathing and waterproof fabric. But that already exists.
It should be widenable to allow for taking off without taking the shoes off. But that already exists.
It could inherit the idea from jackets, to have zippers in the arm pits, but on the back sides of the thighs.

Problem:

You are browsing through stuff on the internet.
After a while you remember something about something. You want to get back to it. But cannot find it.

I suggest:
A web browser plugin (or whatever it is called) that stores your last day/s i a local database to search through.
Come to think of it – as it catches your logged in pages, would even allow you to search in pages where you are logged in, something that google/bing/insertyourfavouritesearchengine doesn’t do.

Say you are going skiing with your family.

Say it is morning so everyone needs to wash and pee. At the same time.

Say you are leaving for the mountain and everyone needs to take a dump and brush teeth. At the same time.

Everyone is queueing to the same room.

I suggest separating the wash basin and shower from the loo into separate rooms.