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Peltor's dual cup, earmuff-style hearing protector is CSA approved. The twin cup design utilizes a hard plastic casing with soft ear molds to minimize resonance while achieving maximum high and low attenuation. The Peltor H10A provides effective, comfortable protection all day.
From the Manufacturer
Peltor's dual cup patented Twin Cup design minimizes resonance achieving maximum high and low frequency attuation. This patented design provides the highest noise reduction rating for an earmuff tested in an approved laboratory. The H10A provides effective, lightweight, comfortable protection for noise levels up to 105 dB. CSA Class AL
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