25-32 NRR Over-ear protection: 20-30 NRR To understand your actual protection level, you need to use the EPA's derating formula: subtract 7 from the NRR and divide by 2. So those 33 NRR foam ...

The best level of ear protection for shooting is a Noise Reduction Rating (NRR) of 33, which is the highest on the scale. Any product with a 28 to 31 NRR is recommended for shooting. Q ...

You need durable and comfortable ear muffs and plugs when you face environmental noises that hurt your hearing. People in loud work settings should choose the right hearing protection to defend their ...

We’ve been on the range testing the best bluetooth hearing protection out there ... Each set has a Noise Reduction Rating (NRR), but the actual sound you are exposed to depends on the fit and the ...

However, a 33 NRR may not be totally necessary for sleep — the measurement is primarily used to gauge ear protection from potentially damaging sounds, such as those from loud machinery or music.