Soft?? pliable foam offers comfort for wearing over an extended time</br>Earplugs are easy to roll down for quick and easy insertions</br>Poly bag keeps each pair of earplugs clean before use</br>Bright yellow allows quick compliance checks</br>Noise Reduction Rating (NRR) 33 dB?? CSA Class AL</br>Noise Reduction Rating of 33 dB</br>Highest NRR available</br>Self-adjusting foam provides low-pressure seal</br>Dermatologically safe foam is nonirritating to skin</br>Made in