That just looks like khakis that have been tight rolled.
Here's what I am talking about...
![](https://thehunt.insnw.net/app/public/system/note_images/1630830/note_preview/e79278a5a1c7d039d5a11c687c16747a.jpg)
what i posted are khakis with elastic cuffs. what you posted just look like sweat pants, and i dig 'em.
in any event, khakis with elastic cuffs exist, and they look really effing stupid.
however, they would have saved me a lot of time french rolling my pants in the 80's.