Hearos F4 Series 7421 Reusable Ear Plugs (NRR 27)GlenSeptember 3, 2019I wear ear plugs for motorcycle riding and lawn mowing to reduce wind or engine noise respectively. My go-to plug is the Howard Leight Smart Fit but I am always looking for something with a better NRR. The Hearos F4 did a nice job of drowning out the lawnmower but I found them too hard and inflexible for extended wearing such as a long bike trip. They're good ear plugs, they're just not comfortable under a helmet.
Hearos F4 Series 7421 Reusable Ear Plugs (NRR 27)RogerOctober 8, 2016Work good unless the loud sound happens to be directly in line with your ear. Thye have a hole down the center. I shoved a wooden match stick in all the way until I hit bottom and broke off the extra. Now they work great. The rigidness the wood goves them makes them easier to use too. I like them now eanough to not be lookinbg for something better. Now I'm working with pink noise so I don't need them at all. - R
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