They have become a staple in everybody's wardrobe - but not many people have stopped to question why they're covered in tiny bits of metal. When you look at your favourite pair of jeans, you will notice there are small studs stitched into them, covering most of the seams.
However, these studs, otherwise known as rivets, were not added for decorative purposes - they serve a much more important job than that. Wondering why they're on almost every pair of jeans, one Reddit user said: "These are on all jeans. Do they serve a purpose, practical or otherwise? If not, why are they there?"
Rivets are usually found on the front and back pockets on jeans and they're made by pressing or hammering a washer onto a metal stud through the denim. Their use on pockets dates back to 1872 when Jacob Davis, a tailor from Nevada, America, started adding them to the pockets of miners.