Foam ear plugs with a high NRR are a popular choice, but silicone and wax ear plugs can also be effective. What are the best ear plugs for studying? Ear plugs that provide a moderate level of ...

The highest NRR for earplugs is 33 ... necessary for sleep — the measurement is primarily used to gauge ear protection from potentially damaging sounds, such as those from loud machinery ...

Because they’re not made to play music, ProCase Noise Reduction Ear Muffs focus on two ... noise dampening foam that provides an NRR 28 dB rating, the best of all the headphones on this list.