Abstract: A new and improved trainer mannequin comprising a body having a head and a torso made of common household items. The head and the torso are hollow. The head has openings for a mouth and two nostrils, and additionally has a neck and a neck opening. All the openings provide access to the interior of the head. The torso also has a neck and neck opening, and is secured to the head by connecting the necks in a way that provides a seal between the interior of the head and the torso. The torso additionally can be interchanged to provide training in three basic aid training techniques. For mouth-to-mouth breathing, the torso is an attached bag collapsible and expandable to simulate a lung. For aid in choking, also known as the Heimlich maneuver, the torso is self-supporting in order to provide a more constant volume and greater resistance to collapsing. This torso also simulates a full human torso including stomach and chest.