What is lunch box?

A lunch box is a portable container or bag used to carry food, typically to school or work. It can be made of plastic, metal, or fabric and usually has a handle for easy carrying. Lunch boxes can come with a variety of compartments or sections to separate different types of food, and some have insulation to keep food hot or cold. Some are also designed with fun and colorful designs to appeal to children. Lunch boxes have become popular as a way to save money and eat healthier by bringing home-cooked meals from home instead of buying expensive and often unhealthy take-out food.