Product Description3M Peltor Optime 101 Over the Head Earmuffs are recommended for TWA noise exposures up to 101 dBA A stainless steel headband provides consistent force to keep the earcups snugly in place yet with low pressure fit that is more comfortable Earcup pivot points tilt for a fit that is customized to each person who wears the earmuffs The wide and liquid foam filled earmuff cushions fit gently to help create a comfortable noise blocking seal These comfort features may encourage a higher rate of hearing protection compliance among workers who require hearing protection Recommended applications for these earmuffs include chipping chiseling drilling furnace operations grinding heavy equipment operations machining pour casting power fastening riveting sanding sawing and welding These earmuffs are commonly used in the following industries agriculture automotive chemicals construction general manufacturing healthcare oil and gas and pharmaceuticals For TWA noise exposures up to 101 dBA these lightweight and comfortable Optime 101 earmuffs have a Noise Reduction Rating NRR of 27 dB The TWA Time Weighted Average noise level indicates a worker s daily exposure to occupational noise over an 8 hour day considering both the average level of noise and the time spent in each area This measurement is used by OSHA in assessing noise exposure and determining appropriate action Exposure to loud noises can adversely affect the ability to hear over time Wearing proper hearing protection devices can help in reducing the harmful effects of noise Sounds levels are expressed in decibels often abbreviated as dB Higher decibel numbers indicate louder sounds Typical decibel levels associated with common sounds include outdoors with no people or traffic 20 dB normal conversation 60 dB power lawn mower 90 dB chain saw 110 dB and 12 gauge shotgun 165 dB The hearing protector NRR can be used to evaluate different hearing protection options However the actual level of protection varies depending on fit wearing time and other factors From the Manufacturer3M Peltor Optime 101 Over the Head Earmuffs are recommended for TWA noise exposures up to 101 dBA A stainless steel headband provides consistent force to keep the earcups snugly in place yet with low pressure fit that is more comfortable Earcup pivot points tilt for a fit that is customized to each person who wears the earmuffs The wide and liquid foam filled earmuff cushions fit gently to help create a comfortable noise blocking seal These comfort features may encourage a higher rate of hearing protection compliance among workers who require hearing protection Recommended applications for these earmuffs include chipping chiseling drilling furnace operations grinding heavy equipment operations machining pour casting power fastening riveting sanding sawing and welding These earmuffs are commonly used in the following industries agriculture automotive chemicals construction general manufacturing healthcare oil and gas and pharmaceuticals For TWA noise exposures up to 101 dBA these lightweight and comfortable Optime 101 earmuffs have a Noise Reduction Rating NRR of 27 dB The TWA Time Weighted Average noise level indicates a worker s daily exposure to occupational noise over an 8 hour day considering both the average level of noise and the time spent in each area This measurement is used by OSHA in assessing noise exposure and determining appropriate action Exposure to loud noises can adversely affect the ability to hear over time Wearing proper hearing protection devices can help in reducing the harmful effects of noise Sounds levels are expressed in decibels often abbreviated as dB Higher decibel numbers indicate louder sounds Typical decibel levels associated with common sounds include outdoors with no people or traffic 20 dB normal conversation 60 dB power lawn mower 90 dB chain saw 110 dB