Champion Traps & Targets Passive Earmuff, Black, NRR 27 42820 Wearing hearing protection on the range is a requirement to protect your hearing and Champion makes it easy with their passive ear muff options. These adjustable ear muffs provide superior hearing protection while remaining light and comfortable for the shooter. Available in either 27NRR or 29NRR, they reduce harmful noise levels and provide a comfortable fit for long days of shooting. Don't let your shooting passion damage your hearing - rely on Champion protection when at the range or in the field.