The Optime I series of earmuffs are ideal for use in environments with moderate to very high levels of industrial noise, and provide a range of attenuation values from SNR 26dB to SNR 35dB to meet all requirements. Features and Benefits Fluid and foam-filled sealing rings ensure low contact pressure Lightweight construction for comfort during prolonged use Robust stainless steel headband maintains pressure and seal Large internal cup space reduces heat and moisture build-up Helmet-mounted versions are compatible with a range of industrial safety helmets for convenience Double cup design improves attenuation at lower frequencies Typical Applications Workshops Sheet-metal shops Printing works Standards CE Certified EN 352-1:1993