Abstract: A ventilation mask system including a mask, such as a mask for use with intermittent positive pressure ventilation, and an associated retainer that allows the mask to be securely and comfortably held against a patient's face. The mask is provided with a retaining strip that includes one mating portion of a mating hook-and-loop fastener system. A retainer corresponding to the mask includes the other mating portion of the hook-and-loop fastener system. Accordingly, when the hook-and-loop material on the retainer is mated with the corresponding hook-and-loop material provided on the ventilation mask, the mask will be securely held in place on the patient's face.