It’s the double layer of fabric that holds the buttons and buttonholes in a shirt. Discover more about the “cannoncino” aka placket.
“Suit jacket” is often the term used to identify a jacket that’s worn in a suit, whereas “blazer” is reserved for a mismatched attire. But is that really so? Here you’ll find a short but comprehensive explanation of what the difference between a suit jacket and a man’s blazer are.