A crew neck is a type of neckline commonly found in shirts and sweaters. It features a round, close-fitting design that sits at the base of the neck. This style is popular for its simplicity and versatility, making it suitable for casual and formal wear alike. Crew necks are often made from various materials, including cotton and wool, and can be found in different styles, such as t-shirts, sweatshirts, and knitwear. The design allows for easy layering, making it a staple in many wardrobes, especially during cooler seasons.