Adjustable: yes | Brand Name: 3m | Color: black | Noise Reduction Rating: 20-db | Number in Package: 1-pk | Packaging Type: carded 3M Basic Earmuff, used to help protect ears against noises at or exceeding 85 decibels, it is an economical choice in hearing protection that does not compromise comfort and quality. Soft foam ear cushions offer all day comfort and a Noise Reduction Rating (NRR) of 20 decibels. Fully adjustable with the ability to be worn in multiple positions, 3M Basic Earmuff is a great choice in hearing protection for both the pro and Diyer. | Use to help protect ears against noises at or exceeding 85 decibels | Economical choice in hearing protection | Multiple wearing positions; over the head, under the chin and beind the neck