Description 3M 1100 Uncorded Earplugs, Poly Bag Soft, corded foam earplugs that conform to the unique shape of each ear for excellent hearing protection and comfort. Smooth, dirt resistant surface for hygiene Comfortable for a wide range of earcanal sizes Noise Reduction Rating (NRR)*: 29 dB. CSA Class AL. *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.
