Multi-use plugs fuse great noise protection performance with all-day wearing comfort. Patented SoftFlange? design securely seals off your ear canal without subjecting you to unpleasant pressure. FlexiFirm? stem core simplifies insertion and removal. Detachable fabric cord provides extra versatility. Corded/Cordless: Corded; Shape: Flanged; Material(s): Molded Rubberized Foam; Noise Reduction Rate (NRR): 27 dB.