Viking&trade; Earmuffs - viking v3 dielectric earmuff 29nrr Multiple-position headband allows wearer to select position over the head, behind the head or under the chin Alternative to cap-mounted earmuffs  wear with hard hats, face shields, respirators and other PPE Patented Air Flow Control technology, delivering optimal attenuation across all frequencies without increasing earcup size or weight Inner-ventilated headband minimizes pressure on the head, breathes easier in warm/humid climates Non-deforming outer headband withstands rough treatment in the toughest workplaces