Hearing protectors Optime™ III - 3M

P3H earmuffs. Double shell design technology to minimize resonance effect. Good speech intelligibility. To be mounted on a helmet, they protect you in extremely noisy environments such as airports, ship engine rooms, power plants, and printing houses. They are compact and their large inner space limits heat and moisture buildup. Your comfort is ensured by soft, wide cushions that exert very low pressure on your ears.