What Level of Noise Protection Do Decibullz Custom Molded Earplugs Provide?Updated 15 days ago
Decibullz Custom Molded Earplugs provide a Noise Reduction Rating (NRR) of up to 31, making them one of the top-rated earplugs on the market for personal hearing protection. This rating reflects the level of sound attenuation the earplugs provide when properly fitted and worn with the included Max Isolation Foam Tips.
What Does NRR 31 Mean?
The NRR (Noise Reduction Rating) is a standardized measurement of how well a hearing protection device reduces sound exposure.
An NRR 31 means that, in laboratory testing, the earplugs reduced incoming noise by up to 31 decibels (dB) — one of the highest available ratings for reusable earplugs.
Why NRR 31 Is Important:
Loud noise over time can lead to permanent hearing damage, tinnitus, and other auditory issues. Whether you’re at a shooting range, a construction site, or a music festival, proper ear protection is essential. Decibullz Custom Molded Earplugs are designed to help prevent noise-induced hearing loss while remaining comfortable for long wear.
Tip Matters: Foam vs. Silicone
- Foam Tips (Included): Provide maximum protection — use these for loud environments like gunfire, motorsports, or industrial machinery.
Silicone Tips (Included): Offer slightly less attenuation (approx. NRR 24) but are great for general use, concerts, and travel.
For best performance, always make sure the tips are properly inserted and the custom mold fits snugly in your ear.
Best Use Cases for NRR 31 Protection:
Shooting and hunting (best earplugs for shooting)
Concerts and live events
Construction and factory environments
DIY projects and power tools
Travel, sleeping, and studying
Test Your Fit:
Test your earplugs in progressively louder environments. If you can still hear external sounds clearly or don’t feel a good seal, try remolding or switching tip sizes. For maximum safety, your own voice should sound deeper or more muffled when properly sealed — a good indicator that you’re protected.
Watch our step-by-step video guide
Have more questions about hearing protection or how to achieve the best fit? Contact Decibullz Support