CPR face shield featuring a one-way valve which prevents direct contact with patient's mouth, nose & face. Elastic ear bands that fit over the patient's ears to keep mask in place. Suitable for both adults & 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.