3M™ PELTOR™ H540A Optime™ III Earmuff (SLC80 33dB, Class 5) upsell_isotunes-trilogy-foam-replacement-tips-5-pair-pack Set the sleep timer to

Set the sleep timer to 45m

Ergonomic shape and low expansion pressure for comfortable fitting

Stay aware during phone calls by keeping hearing enhancement active

If you push a silicone ear plug into your ear canal

3M™ PELTOR™ H540A Optime™ III Earmuff (SLC80 33dB, Class 5) upsell_isotunes-trilogy-foam-replacement-tips-5-pair-pack Set the sleep timer toThe 3M PELTOR H540A Optime III Earmuff has been developed for effective hearing protection in the most demanding noise environments where noise exposures are expected to reach as high as 105 dBA. Features unique double shell earcup design (two cups connected via foam inner layer) to boost the noise reduction throughout the full range of low and high frequencies Durable stainless steel headband resists bending and warping and distributes weight for a