A man has taken to social media to share his discovery after realising that some shirts come with a tiny pocket on the back ...

A man was left baffled by the tiny pocket on the back of his shirt, so he asked others what it was for - and it turns out ...

Have you ever noticed that some shirts come with a tiny pocket at the back of them? Many have overlooked this design feature and accepted that it's an unusual part of the shirt you've bought.