A T-shirt is a casual piece of clothing often characterized by its short sleeves and round neck, commonly made from cotton or a cotton blend. It is designed for comfort and versatility, making it suitable for various activities ranging from everyday wear to athletic pursuits. T-shirts are available in a wide array of colors, patterns, and styles, including graphic tees featuring printed designs, logos, or slogans that allow for personal expression. They can be worn on their own or layered under jackets or sweaters, making them a staple in any wardrobe.