3M™ Combat Arms™ Earplugs, Single Ended

The Institute of St. Louis (ISL) non linear ear-plugs are designed specifically for use in a combat environment to provide situational awareness and protect against high level of peak impulse noise from small arms and artillery weapons fire. The subjective attenuation measurements against continuous noise are carried out in accordance with EN352-2:2002 whilst the peak impulse noise protection is assessed and reported by the Institute of St. Louis against an internal military test protocol.

• NRR 7dB open, NRR 23dB closed