waistband

front

"how to draw jeans" sort of thing

back

There are two thin straps in front for the belt to pass through, and three in the back.

Sometimes the ends of the stitching on the pockets have metal rivets.

The smaller pocket inside the front pocket is called the "coin pocket". In the old days people would put their pocket watches in there, so it was also called the watch pocket. It's usually on the right side.

The rise can be either above or below the navel.

The rectangular brown thing, made of paper or leather, found to the right of the rear belt band is called the "patch".

I don't know why there's a borderline sewn between the rear bands and the rear pockets.

The rear pockets are pretty big. They're also over-stitched.

The groin fold seems to be different in front and back. In front, the fold stands, while in back it's a straight line.

A low waistband will cause a 3-layer effect at the belly. pants, belly, shirt