Radians High Visibility Reusable Earplugs - 3 Pack - Tested to ANSI S3.19-1974 standards, the Radians FP43HV dielectric earplug has an NRR of 27. Its tapered design and sturdy stem allow for easy insertion and removal and a comfortable fit in the ear canal. These thermoplastic rubber earplugs come in high-visibility green. Blister pack includes three pair of earplugs.