Have you ever noticed that most jackets have four small buttons at the end of the sleeve? You may have spotted people wearing one or two buttons undone. Having functional buttonholes used to be a discreet luxury just for tailor-made jackets. These days you’ll find that even off-the-peg jackets in a cheaper price bracket offer the same thing. What’s the point of having functional buttonholes then? Well, there isn’t really one – who would want to roll their jacket sleeves up after all. It’d only look odd.