Howard Leight by Honeywell Viking Series V2 Multi-Position Dielectric Safety Earmuff (1010926) Multiple-position headband can be worn over the head, behind the head or under the chin; compatible with most hard hats, face shields and respirators; Elastic headband strap included Patented Air Flow Control technology reduces sound across all frequencies without increasing earcup size or weight Non-deforming outer headband and breathable inner-ventilated headband provide durability and comfort Durable dielectric construction for protection in electrical environments; snap-in ear cushions for easy maintenance and replacement Noise Reduction Rating 27; Recommended industries: aviation, farming, construction, lumber, steel, transportation, military/law enforcement, manufacturing, sporting, DIY projects, general contracting