Trolley bags, also known as rolling bags or wheeled bags, are a type of luggage designed to be easily transported by rolling on wheels rather than being carried by hand or worn on the back. They have become increasingly popular among travelers and commuters due to their convenience and ease of use.

Trolley bags typically consist of a rectangular or square-shaped bag made from durable materials such as nylon, polyester, or hard-shell plastic. The bag is equipped with a telescopic handle and two or four wheels attached to the bottom, allowing it to be pulled along effortlessly. The wheels are usually made from sturdy materials such as rubber or polyurethane to provide smooth and reliable movement.