Boasting an impressive Noise Reduction Rating of 30, the Howard Leight by Honeywell Leightning L3 Shooting Earmuff delivers excellent hearing protection for shooting. Patented Air Flow Control technology regulates the airflow inside the earmuff, reducing the sound levels across all frequencies without increasing earcup size or weight. Snap-in ear cushions make for easy cleaning, replacement, and maintenance. The telescopic headband lets you get a quick and easy custom fit, and features steel wire construction to withstand rough handling. The headband padding combines with super-soft ear cushions to eliminate the ?squeezing? sensation on the head that can distract while shooting. All Howard Leight shooting glasses and shooting earmuffs are compatible for use with each other..