Decibullz PRO Custom Molded Earplugs use our THERMOFIT® molding system to create a secure custom fit that matches the exact shape of your ears. Mold them in minutes using hot water and enjoy reliable hearing protection built for shooting, industrial work, motorsports, and everyday noise environments.
Bone Collector Edition (GREEN only) brings a rugged, field-proven edge to our PRO line—built for hunters, shooters, and those who demand performance when it matters most.
Decibullz PRO Earplugs combine our signature custom-moldable fit with upgraded PRO-grade components built for reliable hearing protection in any environment.
- Custom Fit – Molds to your ears in minutes
- 31dB NRR Protection – Maximum noise isolation
- Reusable – Remoldable and built to last
- Low Profile - Comfortable fit with glasses
- Bone Collector Edition (GREEN only) – Built for the hunt. Proven in the field
NRR 31
An NRR of 31 means that the hearing protection is estimated to reduce noise levels by an average of 31 decibels across various frequencies.
'NRR' in hearing protection stands for 'Noise Reduction Rating,' which is a single value used to indicate the average level of noise reduction a hearing protection device provides across different frequencies, essentially telling you how much sound attenuation the earplugs or earmuffs will offer when worn correctly; the higher the NRR value, the greater the noise reduction level is considered to be.
NRR is primarily used as a rating system in North America, while Europe often uses 'SNR' (Single Number Rating) and Australia/New Zealand use 'SLC80'; which both differ slightly in calculation.

































































































