Howard Leight Thunder T2HV Hi-Visibility earmuffs protect outdoor workers at night, in low light conditions or during inclement weather. To safeguard worker’s hearing, Air Flow Control technology delivers optimal attenuation across all frequencies to block excessive noise. Boast noise reduction rating of 28, in accordance with ANSI specifications. Bright-green ear cups promote high visibility and contrast, while broad, snap-in ear cushions ensure all-day wearing comfort. Sperian Hearing Protection, formerly Bacou-Dalloz Hearing Safety Group, San Diego, Calif.