CPR face shield featuring a one-way valve which prevents direct contact with patient's mouth, nose and face. Elastic ear bands that fit over the patient's ears to keep mask in place. Suitable for both adults and children. CPR Mask. Material(s): Plastic; Size Group: One Size Fits All; For Use With: First Aid Only™ 90580, 746004, 90608, 746000, 90578, 746006, 90660, 746005, 90659, 90658.