The 3M™ PELTOR™ Optime™ III Earmuffs, H540B are high-performance hearing protectors, developed for use in extremely noisy environments like airports, marine engine rooms, power stations, and print works. These earmuffs reduce noise levels up to 34 dB and have a double-casing technology that minimises resonance in the holder casing resulting in maximum high-frequency attenuation. 

[Features]

• SLC₈₀ 34dB (Class 5) Product
• Double casing technology minimises resonance effect
• Large space inside the cups helps minimise heat and moisture build-up
• Soft, wide, cushions help reduce pressure around the ears
• Cushions and inserts available as replacement Hygiene Kits