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Nrr 20Db behind-the-head
Can be worn over-the-head, behind-the-head, or under-the-chin
Ear muffs
Country of origin: United States
3M ear 1000 muffs are made of durable, lightweight, non-conductive dielectric plastic and can be worn over the head, behind the head, or Under-the-chin to provide excellent hearing protection in high ambient noise environments. These E1000 soft filled ear muffs have soft-foam filled cushions and large ear cup openings for greater protection and comfort. The dielectric plastic ear muffs are perfect for ear protection and comfortable enough for easy use.