From Germany, they are pants made of leather, hence "leder(leather) hosen(pants)."

Solarpunk is a movement focused on a positive, ecological vision for a future where technology is used for human-centric and ecocentric purposes. It is a literary, artistic and aesthetic sub-genre and is also closely tied to eco-political activism. Solarpunk narratives have a distinctly positive and utopian foundation in contrast to the often dystopian visions found within other "punk" science fiction genres.

lederhosen: (lay-der-hose-in) (n.)

a traditional German outfit consisting of high socks, a green felt hat, a dress shirt, suspendors, and leather pants that compact a guys wiener sausage

A type of pants worn as high as they can on guys.

how you say goodbye to your hosen, usually used by german pimps

a tight fitting pants that cut off genitiles

This word has recently taken on a new meaning: cool, awesome, great, etc.