This one kit covers children and adults. Never expires. Free replacement LifeVac when used in a choking emergency! The LifeVac is a non-powered, non-invasive, single-use only airway clearance device developed for resuscitating a victim with an airway obstruction when current choking protocols have been followed without success. LifeVac has a one-way valve that does not allow any air to enter a choking victim on the downward motion. LifeVac comes fully equipped with an adult mask, a pediatric mask, and a practice mask. The duration of the suction is minimal which makes LifeVac safe and effective. LifeVac is easy to use in an obstructed airway emergency. Free online training is available.