3M classic superfit 33 earplugs (33 nrr) are comfortable and quiet. I buy a box ... | Hacker News

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		m463 on April 10, 2021 \| parent \| context \| favorite \| on: Hacking a $200 Under Desk Exercise Bike 3M classic superfit 33 earplugs (33 nrr) are comfortable and quiet. I buy a box of 250 and it lasts me forever.

brailsafe on April 11, 2021 [–]

Good to know. I've tried other construction style 3M earmuffs that didn't come close to doing the trick.

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