I have several 3M Peltor and Howard Leight headphones and have used several ear tips so I know what the different NRR numbers sound like. No way is it 30 NRR. Poor sealing, weak thin foam in sleeve. They are of terrible quality. In addition, the helmet is cheap. Very low quality. Poor suspension that is poorly fixed in the helmet shell. Wobbly connections for everything. I will say that it is nice that they contain both a metal mesh and polyethylene screens. This guarantees a second star.
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