A sleeveless shirt is a type of clothing that does not have sleeves, allowing for greater freedom of movement and ventilation. It is often made from lightweight materials, making it a popular choice for warm weather. Sleeveless shirts can come in various styles, including tank tops, halter tops, and muscle shirts, catering to different fashion preferences. These shirts are commonly worn by both men and women and can be paired with various bottoms, such as shorts, skirts, or jeans. They are versatile and can be used for casual outings, workouts, or layering under jackets. Popular brands like Nike and Adidas offer sleeveless options for athletic wear.