HLI1010927 / 1010927 EARMUFF VIKING V3 NRR 29 20EA/CA Viking™ Muff The Viking™ features a non-deforming 3-position headband, allowing workers to wear the muff over the head, behind the head or under the chin. This offers more wearing options for comfort or to work in conjunction with helmets, respirators, shields and other safety equipment. The inner ventilated headband minimizes pressure on the head and breathes easier in warm or humid climates. Dielectric design is safe for electrical or explosive environments. A headband strap improves comfort, attenuation and fit when worn behind the head or under the chin. Meets ANSI S.319-1979 and CSA 794.2-M1984 Standards.