These realistic Prestan Adult Professional mannequins look and feel like the human body and are completely different to anything else that you can buy. The mannequins can be bought either singly or in pack of four. These mannequins have been specifically designed with a clamshell shape that makes it easy to insert a face shield and lung bag. The kit comes with four mannequins, four CPR monitors, 50 lung bags, instruction sheet and a carry bag.