3M HY51 Optime-I Hygiene PadFeaturesKit includes replacement ear cushions and noise reduction pads for use with 3M™ Optime™ I Headsets, which can be changed in a few easy stepsExtends the lifespan of earplugsProvides good function and hygieneAvoid using uncomfortable earplugs Package includes 2x foam inserts and 2x leak-proof ringsRecommended IndustryAgriculture, Automotive, General Manufacturing, Metal Manufacturing, Military Maintenance, Repair and Operations (MRO), Mining, Oil and Gas, Pharmaceutical, Transportation