Mack’s ThermaFit Upgraded Formula vs the Original: Improved?
I have used Mack’s ThermaFit earplugs for a few years. They have been my go-to recommendation for low frequency noise (LFN) reduction foam earplugs ever since Flents changed the formula of their Quiet Please. Foam earplugs that are good at reducing LFN and comfortable at night are hard to come by, yet can make all …
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