The unique clamshell design of these adult training manikins helps Instructors save valuable training time by making setting up, transporting, packing up, and inserting a face shield lung bag quick and easy. A built-in clicker mechanism helps students learn to use the right amount of force to compress the chest to the correct depth. Each manikin's head is built for practice of both the jaw thrust maneuver and the head-tilt/chin-lift technique to help students learn how to open the airway during CPR. The manikins also feature a built-in CPR rate monitor that lets students and Instructors see at a glance when the proper rate of compressions has been reached. Comes with 4 manikins, 50 infant face shield lung bags, and a nylon carrying case.