Unique dual-headband offers better positioning and breathability, and non-deforming outer headband minimizes pressure. Dielectric construction withstands use and abuse while protecting workers in electrical environments. Features Air Flow Control™ technology and snap-in ear cushions for easy maintenance. Cap-mounted earmuffs include a pair of adapters for use with most popular hard hats. Tested to ANSI S3.19-1974. 10/Case.