Moldex Rockets Reusable Ear Plugs-Uncorded 100% PVC-Free®. Independently tested NRR 27, with a new sound dampening additive. NRR 27 gives protection in most noisy environments. Easy grip handle lets earplugs easily slip into ear. Air bubble in tip provides cushioned comfort. Earplugs can be washed and reused. Pocket-Pak® carrying case provides hygienic storage of plugs between uses, except for models #6404 and #6415. Available in corded, uncorded, and corded metal detectable models. Look for the bright green color as a symbol of Moldex quality. In the Metal Detectable version the plug and cord are independently detectable for added safety.