T-shirts are casual, comfortable tops made from soft fabrics like cotton or cotton blends. They typically feature a simple round neckline and short sleeves, offering a relaxed, easygoing fit. T-shirts come in a wide range of styles, from plain to graphic designs, making them versatile for various occasions. They are a wardrobe staple for everyday wear, providing comfort and breathability, and are often worn alone or layered under other garments. T-shirts can be dressed up or down, making them ideal for both casual outings and lounging.