Elvex UltraSonic earmuff is the newest earmuff with a noise reduction rating of 29dB. This earmuff has been designed to provide full spectrum attentuation, as well as superb low frequency attenuation. Ultrasonic uses a fork style headband for even distribution of pressure, and improved balance required for extra deep ear cups. Extra-wide ear cushions provide the highest comfort and a steel headband tolerates temperature extremes.
