A crew neck t-shirt is a type of shirt characterized by its round neckline that sits close to the base of the neck. This design is simple and versatile, making it a popular choice for casual wear. Crew neck t-shirts are typically made from soft materials like cotton, providing comfort and breathability. These t-shirts can be worn alone or layered under other clothing items, such as jackets or sweaters. They come in various colors and patterns, allowing for personal expression. Crew neck t-shirts are suitable for both men and women, making them a staple in many wardrobes.