Product Details 

Air Flow Control Technology: Bilsom’s patented Air Flow Control technology delivers optimal attenuation across all frequencies, without increasing earcup size or weight. 

A patented baseplate chamber and high-tech non-woven layer manage the flow of air inside the earmuff to control how sound reaches the ear. 

The result is better, more consistent overall attenuation for virtually all industrial noise environments.

Air Flow Control is a standard feature on all Thunder series earmuffs. 

Dielectric/Plastic Construction Thunder’s robust nondeforming dielectric construction withstands use and abuse, while protecting your workers in electrical environments. 

Snap-In-Ear Cushions: Make replacement quick and easy. 

For Use with Helmets :  3711, 3712, 3721 Helmet Adapters

When it comes to selecting an earmuff, comfort reigns supreme with workers.

That's why the Thunder series earmuff is designed with all-day comfort in mind. 

Headband earmuffs feature a unique dual-headband for better positioning and breathability, and non-deforming outer headband that minimizes pressure on the head. 

Plus, its dielectric construction withstands use and abuse, while protecting workers in electrical environments

SNR - 29 dB

ISO 9001 / 2000