A jet bridge, also known as a jetway, is a movable connector that links an airport terminal to an aircraft. It allows passengers to board and disembark from the plane without having to go outside, providing protection from weather conditions. Jet bridges are commonly used at commercial airports to enhance passenger convenience and safety. Typically made of a series of flexible sections, a jet bridge can extend and retract to accommodate different aircraft sizes. They are often equipped with air conditioning and can be adjusted to align with the aircraft door, making the boarding process smoother for travelers and airline staff alike.