When inserting the earplug into the ear canal, the slow-recovery foam helps make insertion easier, giving the wearer time to get the compressed foam cylinder (rolled down earplug) into the ear before the foam fully expands. High visibility neon yellow coloring makes these earplugs easy to see to verify compliance. Available with or without cord to suit user preference. Dispenser bottles for One Touch Pro dispenser are also available.This product is EARfit testable to help validate the level of protection the individual user is getting.