Honeywell Howard Leight VeriShield 100 Series Passive Earmuffs - Folding Headband - 24 NRR dBComfortably fits a wide range of head sizes. Ideal for workers with larger ears, or who wear hearing aids. Steel wire construction with padded headband and precision micro adjustments Features a new unique memory foam that combines denser and softer foam than previous models. Honeywell's Air Flow Control technology controls how sound reaches the ear, ensuring optimum noise attenuation across all frequencies.