The valves allows to let the air flow through while doing rescue breathing and at the same time closed for the air coming from the patient as well as the liquids. This way the transparence of the face shield allows rescuer to visually check for patients face and lip color and prevents contact with patients saliva, vomit or blood. The special way the face shield is designed it is suitable to be used with children and adults. The Ambu Res-Cue Key is available in the Ambu Brand or as private label. On an area of 14 x 39 mm a private logo can be printed. For private label a minimum of 250 pieces have to be ordered. The face shield has two integrated elastic ear bands that fit over patients 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 Res-Cue Key is packed in a small soft bag with a ring so that it can easily be attached to a key ring. This way the Ambu Res-Cue Key is always available.