Creases in trousers - how to make them stay sharp?

[multiccy-csa]

Greetings all,
How does one keep creases in trousers, wool or cotton, stay? And stay sharp?
I see certain trousers that seem to have a crease put in mechanically at the factory that looks as though it can't be removed, such as the below cotton Gurkha pants, with the crease almost extending to the cuff.
How is this done? And can i replicate with mine, where i'd like a sharp crease to stay?
Many thanks for any thoughts.

 

[NadalRG]

In for answers.

 

[Son Of Saphir]

Some cloths don't hold creases well.
The real solution is to become familiar with cloths that hold creases,
but problem is it usually involves moving into custom clothing and is costly.

The crease on those trousers above looks awful.

 

[comrade]

Wool twill trouser hold creases well.

 

[Grafting3590]

You can always just iron them at home, but curious if there are other easier answers

 

[ppk]

Wool twill trouser hold creases well.

👆🏽

 

[TimothyF]

Perma-creases always require a chemical treatment, which will turn your all-natural fabric into something quite synthetic

Dense cloths and tight weaves hold creases especially well, and you should become proficient with steam and iron