Luggage refers to bags, cases, and containers which are used for the storage and transport of personal belongings and other items during travel. Luggage bags come in a variety of sizes, materials, and styles, and are designed to meet the needs of different types of travelers. Some common types of luggage bags include carry-on bags, suitcases, duffel bags, backpacks, and luggage sets. These bags are typically made from durable materials such as nylon, polyester, or leather, and are designed to withstand the rigors of travel, including exposure to weather and being stored in overhead compartments or cargo holds.