The Sonis™ range of ear defenders have been designed by the JSP R&D team. Working with a leading UK acoustic engineering research facility JSP have developed an ear defender range that peaks at an unbeaten 37 SNR.
C SNR 27
GREEN LOW ATTENUATION SMALL CUP 80-107 dB
SNR 31
YELLOW MEDIUM ATTENUATION MEDIUM CUP 107-111 dB
SNR 32
ORANGE MEDIUM ATTENUATION SMALL / COMPACT CUP 107-112 dB