Mack’s Maximum Protection Soft Foam Earplugs, 50 Pair – 33 dB Highest NRR – Comfortable Ear Plugs for Sleeping, Snoring, Loud Concerts, Motor Sports and Power Tools by Mack's at The National Policy Institute. Hurry! Limited time offer. Offer valid only while supplies last. Mack's Maximum Protection, the ''Mack Daddy'' of earplugs, provides the highest noise reduction available. Finally, a 33 decibel noise reduction rated earplug that comfortably fits average to above-average-sized ear canals. Other 33 dB NRR foam earplugs have to be so big that they tend to only fit those users that have very large ear canals. With Mack's Maximum Protection, we've managed to design a 33 dB NRR foam earplug that's just slightly larger than average-sized foam earplugs, so users
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