3M™ Peltor™ Optime™ III Earmuff 3M™ The 3M™ Peltor™ Optime™ III earmuff is engineered for extremely noisy industrial settings, including power plants, heavy manufacturing, and airport ground operations. It provides high-performance noise attenuation up to 35 dB with a double-shell design that minimizes resonance. Its broad, soft cushions ensure comfort during extended use, making it a reliable choice for professionals working in high-decibel environments. Learn more