What is a "tank top"?

A tank top is a type of sleeveless shirt that is typically made of a lightweight fabric, such as cotton or polyester, and features wide armholes and shoulder straps that leave the shoulders and arms exposed. Tank tops come in a variety of styles, from basic solid colors to printed designs, and can be worn as casual or athletic wear. They are often worn in warm weather as a way to stay cool and comfortable, or as an undergarment for layering. Tank tops are popular among both men and women and are a staple in many wardrobes.