A face mask has upper and lower portions made of mask material. The upper and lower portions are joined together at side portions and a front portion. The side portions converge as the side portions extend from a face edge to the front portion. The mask has sections between the face edge and the front portion, with each section having a head retainer, a nose strip or both. The sections are divisible from each other along separation zones or bands that extend between the side edges. The size of the mask can be reduced by removing one or more sections, leaving one or more sections that incorporate the front edge and the shortened side edges.
