Dual mode earplugs that protect wearers from noise and, with a quick flip, allows better communication when needed. Flip cap allows user to easily switch from a closed position (NRR 24 dB) for protection from continuous noise, to an open position (NRR 4 dB) to communicate or hear. Offers effective hearing protection for most noisy environments and the ability to hear more clearly away from the workplace. Soft, triple flange design provides a superior seal and fits most ear canals. Each pair comes with a Pocket-Pak® carrying case to keep them clean when not in use and an optional cloth cord. PVC-free. Made in USA. 4 Boxes/case.