Adam and David come with our patented ball valve airway, which replicates the occluded airway of the victim in need of CPR. It opens to allow air into the lungs when proper chin lifts are applied. These lightweight, portable trainers feature channel mouth/nosepieces for each student. Lifelike anatomical landmarks are carotid pulse, sternum, rib cage, and substernal notch. Soft carry case with kneeling pads, instructions for use, 10 mouth/nose pieces, and 10 airway systems with lung included.