Hairnets, also known as SNOODS, are a type of hair accessory used to keep hair in place. They are typically made of nylon or other synthetic materials and come in a variety of colors and styles. Hairnets are often worn by people in the food service industry, such as cooks and servers, to keep their hair from falling into food. They are also commonly used in medical settings to prevent the spread of germs. Hairnets are an important part of personal hygiene and safety in many industries.