A handkerchief is a piece of cloth, usually square, that is used for various purposes, such as wiping the face, hands, or eyes. Traditionally made from cotton or linen, handkerchiefs can be decorative and are often embroidered or printed with patterns. They are reusable and can be washed, making them an eco-friendly alternative to disposable tissues. Handkerchiefs have a long history and were once considered a fashion accessory. They can also serve practical functions, such as being used in theater performances or as a signal in sports like tennis. Today, they remain popular for personal use and as gifts.