Crew neck
A crew neck is a type of shirt or sweater that has a round neckline and no collar, often worn with other layers. The name dates back to 1939 and was named after a type of sweater worn by rowers.
The T-shirt crew neck was developed in 1932 as an undergarment that would absorb sweat and prevent shoulder pads of American football players from causing chafing. The U.S. Navy was the first of the U.S. armed forces to adopt the crew-neck T-shirt or "Gob Shirt".
In some German American neighborhoods in the North East parts of the United States, "crew neck" sweat shirts are still referred by the German word "Schrank". This is especially true for grey crew neck sweatshirts.
Often the material around the neck is ribbed and added to the t-shirt as a separate piece.