memory earplug/foam ear protection/polyurethane factory 1.slow rebound foam 2.protection&sounproof 3.flexible,soft & comfort memory earplug/safety ear protector/foam ear protection/ PU foam protection earplug/polyurethane factory Item: earplugItem No.: H-023Material: slow rebound foamProcess: foam Size: 12.3*24mmColor: orange, blue, yellow, red, black, brownUse: industrial protection, soundproof, ...