The 3M™ PELTOR™ Optime™ III, H540A earmuff is a high-performance hearing protector and has been developed for use in high-noise environments like airports, marine engine rooms, power stations, and print works. The double casing technology minimises resonance in the holder casing resulting in maximum high-frequency attenuation. 

[Features]

• SLC₈₀ 33dB (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
• Compatible with the 3M™ E-A-Rfit™ Dual-Ear Validation System for an accurate quantitative assessment of noise reduction and individual hearing protection