Realistic to the eye and the touch, the Prestan Adult Professional Manikin is unlike any other on the market. Available individually or in convenient multipacks of four for class training purposes, Prestan manikins are uniquely designed as a clamshell that accommodates an easy-to-insert face shield/lung bag. Prestan's revolutionary new CPR Rate Monitor allows for instant feedback to both instructor and student regarding the rate of chest compression. This allows each student to gauge their rate of compressions on their own as well as allowing the instructor to monitor several students quickly and easily. And with our patented face/head tilt, the Prestan Professional Adult Manikin simulates the way an actual victim's head would move if he required CPR. In addition, the unique construction of our manikins incorporates a mechanism to help them use the correct force to compress the chest to the correct depth.