The QB1 has an NRR of 27, the highest attenuation among banded hearing protectors. The QB1 is a unique blend of our Quiet earplug, attached with a soft flexible stem to the new Quiet Band. The result is a highly comfortable, effective noise attenuating protection product for inner-aural use. The reusable soft foam ear pods are designed for wearer comfort and are washable with soap and water for long term hygienic use. Ratings: NRR 27, SNR 26 , SLC80 23.5. Sold in a box of 10.