3M 391-1004 E-A-Rsoft Yellow Neons Refill Earplug , Uncorded, 500 pair

These uncorded foam earplugs feature soft, slow-recovery foam for comfort and outstanding noise reduction. Earplugs are easy to roll down and insert, then expand within the earcanal for a comfortable, secure fit. - Refill container for One Touch dispenser. One gentle turn delivers uncorded foam earplugs. - No packaging waste with each pair - Noise Reduction Rating (NRR)*: 33 dB. CSA Class AL - Test compatible with 3M E-A-Rfit Validation System *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