The Life Mask Resuscitator Compact Barrier keeps CPR protection handy and ready when you need it. The Life Mask Resuscitator reduces the risk to the rescuer and the victim during mouth-to-mouth resuscitation and is ideal for EMTs, firefighters and anyone trained in CPR. This barrier reduces the risks to the rescuer and the victim during mouth-to-mouth resuscitation. Barrier possesses a 3M Filtrete bacterial and viral filter.