Specifications: ?Conforms to Australian AS/NZS 1716:2003 P1 standards with StandardsMark. Pending SAI Global Licence. ?With polypropylene (P.P.) outer layers provides smooth lining and avoids loose fibers. ?Low breathing resistance for increased wearer comfort. Fringe seal avoids open layer around the edges. ?Latex-free synthetic rubber head straps, adjustable nose clip and soft foam nosepiece for comfortable custom fit.