The level-dependent technology used in the earplug has been tested and found to be protective up to approximately 190 dBP for outdoor exposures (sufficient to cover most of the weapons in the military inventory, including shoulder-fired rockets)*. The earplug sizing options for the single-ended Combat Arms? accommodate 98% of the adult population ‘s earcanals for proper fit. There is a 100% product testing protocol for impedance characteristics. Combat Arms earplugs do not require batteries and include convenient retention cords. The single-sided versions feature an in-ear switching mechanism for the user to toggle between impulse noise and steady state noise hazards (23 dB NRR in the Closed/Constant Protection mode).
3M is Leading the Advancement of Hearing Conservation?.
Dual ended, reusable.
One size fits many, two settings from brochure.
NRR 7dB open, NRR 23dB closed
Corded design three triple-flange