The Sonis® range of ear defenders have been designed by the JSP Research & Development team working with a leading UK acoustic engineering research facility. Compatible with our full range of Evolution® Safety Helmets.
- SNR 31
- Substantial industrial noise
- Construction & Agricultural Machinery
- Road Works
- Forestry
- Engineering
- Colour Coding for easy selection
- Yellow - Medium attenuation large cup 112-117dB