foam sponges sound proof/yellow foam earplug/silicone earplugs 1.slow rebound foam 2.protection&sounproof 3.flexible,softness foam sponges sound proof/ear protector with line/yellow foam earplug/silicone earplugsItem: earplugItem No.: H-031Material: slow rebound foamProcess: foam Size: 12.3*24mmColor: orange, blue, yellow, red, black, brownUse: industrial protection, soundproof, earphoneFeature: ...