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Jeans are a wardrobe essential for countless people. Denim is frequently hailed as a classic fabric that remains eternally fashionable , meaning jeans can be worn for years without appearing dated. But, despite millions of us owning at least one pair of jeans that we wear regularly, it appears most of us have never scrutinised the material closely.

If you examine your jeans' pockets, you'll spot a tiny metal disc at the very rim of each pocket. On certain jeans, this disc appears flat, whilst on others, it features a raised surface, almost resembling half of a metal press stud. You may have them on the back as well as the front, but they're most common on the front pockets.

Most of us will have never noticed these small metal components previously, but one Reddit user h

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