you for your question. Unlike many Ear Muffs on the market ours are
tested and certified by an independent 3rd party lab to verify the Noise
Reduction Rating per the American National Standards Institute (ANSI)
S3.19 Test Standard. The lab used is based in Denver, CO.
We also have our ear muffs tested and certified to the European CE EN 352.1 standard.
We have noticed some companies do not properly follow the ANSI standard and actually list a false NRR value. This happens when companies do not fully understand the standard and fail to deduct 3dB from their test results, which the ANSI standard specifies in section 40CFR PART 211-Product Noise Labeling.
We have followed the standard as outlined and deducted the 3dB from our NRR test results to arrive at our best NRR Product Noise Labeling per the ANSI standard specifications.