A versatile, cap-mount earmuff with bright orange colored earcups for added visibility. • Universal mounting attachment fits most hard hats • Earcup pivot points tilt for optimum comfort and efficiency • Ultra light with liquid/foam filled earmuff cushions • Noise Reduction Rating (NRR)*: 23 dB. CSA Class A *The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided. 3M is Leading the Advancement of Hearing Conservation™.