Dual mode earplugs that protect wearers from noise and, with a quick Flip, also allow better communication when needed, without the inconvenience of removing earplugs. Flip cap allows user to easily switch from a closed position (NRR 24dB), for protection from continuous noise, to an open position (NRR 4dB), for hearing and communication. Washable and reusable. Each pair comes with a Pocket-Pak® carrying case to keep them clean when not in use, plus an optional cloth cord. PVC-free. Independently tested to ANSI S3.19-1974. Made in USA. 4 Boxes/case.