Peltor Optime 105 Over the Head Earmuff may2 Exhale valve lets workers breathe the Delta comfort hip Exhale valve lets workers breathe easy and stay coolDura Mesh® shell resists collapsing in heat and humidityMolded nose bridge seals easily without a metal nosebandFacepiece is naturally contoured for less pressureStraps are securely attached so they don’t break at the sealSoftspun® lining for increased comfort and durabilitySoft foam nose cushion for added comfortAvailable in three sizes to fit more workers and increase OSHA complianceNIOSH certified to have a filter efficiency of 95% or greater for non oil based particulatesCertified under 42CFR84Meets heat and flame resistance in accordance with ANSI ISEA 110 2009 Section 7 Hi Viz Yellow or Patented twin cup design Recommended for extremely loud conditions