Realistic to the eye and the touch, the PRESTAN manikin is unlike any other on the market. These 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 student and instructor 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 their patented face/head tilt, the PRESTAN manikin simulates the way an actual victim's head would move if they required CPR. In addition, the unique construction of PRESTAN manikins incorporates a mechanism to help students use the correct force to compress the chest to the correct depth. All PRESTAN products are latex-free. "Guaranteed to be the future of CPR/AED Training Manikins!"