A T-shirt is a casual garment typically made of cotton or a cotton blend. It features short sleeves and a round neckline, making it comfortable and easy to wear. T-shirts come in various colors, patterns, and sizes, catering to different styles and preferences. They are often used as a canvas for designs, logos, or slogans. Originally designed as undergarments in the late 19th century, T-shirts gained popularity in the mid-20th century as everyday wear. Today, they are a staple in many wardrobes and are often associated with pop culture, sports teams, and fashion trends.