A T-shirt is essential in casual wear globally. Made from cotton or a cotton blend, it's comfy and breathable, perfect for everything from relaxing at home to hanging out with friends. T-shirts are available in many colors, styles, and designs, letting people show their personal style. Their classic round neck and short sleeves make them a versatile choice, suitable for layering or wearing alone. With more focus on sustainable fashion, many brands now provide eco-friendly T-shirt options, increasing their appeal.