Hellberg Electronic Earmuff Hygiene Kits Size:Secure Electronic 8 Assumed Protection in dB

8 Assumed Protection in dB (APV) 6

Mack's Original Foam Ear Plugs are molded from state-of-the-art ultra soft foam

60º - 90º dispersion for capturing sound

Sound Level Conversion: 22 (AUS & NZ)

The lifespan of the earplugs depends on frequency of use but can go up to 100x reusable

Hellberg Electronic Earmuff Hygiene Kits Size:Secure Electronic 8 Assumed Protection in dBReplacement pads and foam for Hellberg Earmuffs Hygiene Kits are used to maintain proper earmuff performance Kits contain new ear cushions and foam liner inserts which can be quickly replaced in a few easy steps You should replace your hygiene kit every six months to maintain maximum protection