Shirts are a type of clothing item that typically cover the upper body and arms. They come in a variety of styles, including formal dress shirts, casual t-shirts, polo shirts, button-up shirts, and more. Shirts can be made from a variety of materials, including cotton, silk, polyester, and more. They can be plain or patterned, and can feature various designs, logos, or slogans. Shirts can be worn for many different occasions, including work, school, sports, and social events, and can be dressed up or down depending on the situation.