People who wore jeans used to keep their pocket watches in it.
Why do modern jeans still have pocket watch pockets? - Quora
The Several Lives — Fashion Studies
People are only just realizing what the little pockets on jeans is
Here's why denims have small buttons on their pockets!
Why do our jeans have a tiny pocket just above the front pocket
Historian Explains Why Our Jeans Have Tiny Pockets
Why do jeans have that tiny pocket?
Why do our jeans have a tiny pocket just above the front pocket
Designer Explains Why Women's Jeans Have Small Pockets
Why Is There a Tiny Pocket Above the Front Pocket on Jeans?
The Several Lives — Fashion Studies
Fashion designer reveals the REAL reason women's jeans pockets are
Why do jeans have that tiny pocket?
Here's why denims have small buttons on their pockets!
The Several Lives — Fashion Studies