Tested according to ANSI specs S3.19-1974, Evader™ Made in the USA foam earplugs feature soft, slow-recovery foam for extreme comfort and outstanding noise reduction to protect your hearing. Designed for a comfort fit, they’re easy to roll down and insert, and they expand slowly for a low-pressure fit in virtually any size ear canal. The Radians Evader Foam Earplug 500 Pair Dispenser Refill are bulk packed individual earplugs designed to be used with the FPD-500L94 Refillable Dispenser.