3M™ E-A-R™ Push-Ins™ with patented Grip Rings uncorded push-to-fit foam earplugs gently seal the earcanal to enhance fit. Benefits •Poly bag keeps each pair of earplugs available or accesible for re-use. •Grip rings gently seal earcanal to enhance fit. •Soft polyurethane foam tips •Flexible stem makes insertion and removal easy and helps keep the tips clean when the wearer's hands are dirty •Noise Reduction Rating (NRR)*: 30 dB. CSA Class AL.