What is the point of this little breast pocket near my left shoulder?

I have like 10 t-shirts with a tiny breast pocket right over my left nipple, and what am I supposed to put in there? I've never put fucking anything in this pocket, but it's always there with a tiny tag from whatever manufacturer made the shirt.

  • Hexboare [they/them]
    ·
    4 hours ago

    It's a fashion design element from when the pockets would be functional.

    You don't really see them on dress shirts in either the UK or the USA, can't recall which.