The first piece of clothing is the crewneck sweater/sweatshirt which has a round neck or neckline for its collar. There is a long history that traces back to the early 1940's and this style of sweater. It has developed and changed over time to what you see today. Now let's fast forward to more modern times. Today this sweatshirt style has become iconic with teenagers and adults all around the world but mainly in the US do to the different weather cycles.