That's my setup with the Harold Leight slim muffs. One or the other just didn't seem to be enough to me, but with both I can turn on the Leight muffs when I want to have a conversation and it works out perfect.Amazon.com: 3M E-A-Rsoft FX Uncorded Earplugs, Hearing Conservation 312-1261 in Poly Bag: Industrial & Scientific
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Noise Reduction Rating (NRR) of 33 dB, CSA Class AL
I'm paranoid about hearing loss at an older age, and always wear earmuffs and plugs at the same time.
These plugs alone are more than sufficient with my louder toys.
They come in a huge box, 200 pairs.