Smooth, dirt resistant surface provides better hygiene Earplugs are easy to roll down for quick and easy fitting Tapered design fits comfortably in earcanals Soft polyurethane foam is hypoallergenic Noise Reduction Rating (NRR) 29 dB, CSA Class AL 3M™ 1100 uncorded foam…

These test earplugs are modified with a probe tube for use during earplug fit testing with the 3M™ E-A-Rfit™ Validation System 50 pair per case 3M PSD products are for occupational use only. *The NRR may overestimate the hearing protection provided during typical use. …

3M™ E-A-Rfit™ Dual-Ear Validation System helps determine whether workers are receiving adequate protection from their hearing protector by measuring across 7 standard frequencies in under five seconds, providing a detailed report on the noise attenuation performance of earplugs or…

Product Features Poly bag keeps each pair of earplugs clean and available or accesible for re-use Regular size fits most earcanals Noise Reduction Rating (NRR)*: 33 dB. CSA Class AL Test compatible with 3M E-A-Rfit Validation System 200 Pair per Box