Ear protection against extremely noisy environments. The 3M Peltor Optime III is a high performance hearing protector developed for use in extremely noise environments like airports, marine engine rooms, power stations and print works. Ideal hearing protection against noise arising from extremely noisy environments like airports, marine engine rooms, power stations and print works. Double casings technology helps minimise resonance effect. Large space inside cup helps reduce moisture and heat build-up. Soft wide cushions helps reduce pressure around the ears and improves comfort and wearability. Easy to replace cushions and inserts helps keep them hygienically clean.