3M™ E-A-R™ Pistonz™ uncorded, push-to-fit earplugs are stylish hearing protection that feature soft foam tips with a metallic look and a convenient thumb-grip stem. No-roll foam makes fitting easy; simply push the earplug into the earcanal and twist to adjust the fit. Benefits •Instant-use - No need to roll down. •Stem is stiff enough for insertion, yet designed to flex sideways if impacted •Metallic-style earplug tips with ultra-soft feel for all day wear •Officially licensed hearing protection of NASCAR® •Noise Reduction Rating (NRR)*: 29 dB. CSA Class AL