Elvex SuperSonic muff is one of only a few ear muffs that have achieved a 29 dB NRR rating at an independent and certified laboratory in accordance with ANSI S3.19-1974.
Superior performance has been achieved in these measurable criteria:
29 dB Certified NRR to ANSI S3.19-1974 The SuperSonic muff has the lowest weight in its class, 9.4 oz. SuperSonic has the lowest headband force in its class Pressure equalizing headband provides even fit and seal for a wide variety of facial configurations and sizes SuperSeal™ ear cushions provide outstanding seal and comfort A flexible suspension allows muffs to automatically adjust to facial shape A dielectric construction for environments with exposure to high voltage situations