A T-shirt or tee shirt is a kind of shirt which has short sleeves. These sleeves cover the shoulders and the top of the arm, but they do not cover the elbow or the forearm. T-shirts are usually made from cotton fabric or fabric which contains a mix of cotton and polyester. T-shirts are usually considered a casual type of clothing. Both men and women wear T-shirts in Western countries, such as the United States, Canada, England, and France. In some countries, such as Muslim countries, women do not wear T-shirts outside of the home.