The market leading Sonis 3 ear defenders with their SNR of 37dB(A) rating protect against extreme industrial noise. They are suitable for use in situations such as around aircraft, quarrying, heavy engineering etc.
The ear defenders have undergone independent testing in accordance with the ISO 4869 standard. The over moulded headband has a built-in comfort area with ventilation to help reduce heat build-up. The headband force and the sealing ring surface area work together to provide a good fit, for maximum protection and maximum comfort The Sonis 3 ear defenders feature large cups offering high attenuation 112-117dB with a rating of SNR 37dB(A).