JSP Sonis 2 Helmet Mounted Ear Defenders - SNR 31 SNR 31Medium attenuation small compact cup 107-112dBSubstantial industrial noiseConstruction & Agricultural machineryRoadworksForestryEngineeringHygienicCustomisationColour Coding for easy selectionJSP JSP Sonis 2 Helmet Mounted Ear Defenders - SNR 31 | Work & Wear Direct