CPR Face Shield Material Plastic Type One Way Valve UNSPSC Code 42172102 Usage Disposable Cpr microshield has been the leader in cpr barriers Designed to protect the rescuer while aiding in the administration of proper cpr technique The positive one-way valve inside the airway enhancing bite block is designed for maximum protection of the first responder It also assists in keeping an open airway while performing the head-tilt, chin-lift maneuver, true mouth-to-mouth seal The original cpr microshield is conveniently packaged in an orange vinyl envelope style case and is still our most popular packaging option