The Ambu ResKey is a semi-transparent face shield with a filter. The filter allows the air to flow through while doing rescue breathing and at the same time filters the air coming from the patient. The special way the transparent face shield is designed it can cover the whole face of the patient and at the same time allows rescuer to visually check for patient?s face and lip color and prevents contact with patient?s saliva, vomit or blood. The face shield has two integrated elastic ear bands that fit over patient?s ears to keep the mask in place while doing resuscitation. So standard resuscitation techniques can be used without modification or the risk that the face shield slides of the patient. The Ambu ResKey is packed in a small soft bag that it can easily be attached to a key ring. This way the Ambu ResKey is always available.