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.