This is the best selling ear muff (OPTIME 101 Series) in the world! The H7 Hard Hat Mount Earmuff provides excellent attenuation at low and high frequencies. Earmuffs attach to hard hats through the accessory slots. Earmuff exerts low pressure for comfortable, long term use. Soft, liquid foam-filled ear cushions provide added comfort. Simple height adjustment without projecting parts. Suitable for construction, heavy industry and airports. Mounts to most standard hard hats. NRR 24 dB.

• Attachments for Hard Hats
• Soft, liquid foam-filled ear cushions provide added comfort
• NRR 24 dB