Excellent noise attenuation meets exceptional in-ear comfort. Advanced air-pocket design and internal interlocking fins create a noise-blocking barrier that ensures optimal protection. Four-flange profile provides a soft, low-pressure yet solid, slip-free ear canal seal. Tapered shape and firm stem enable easy insertion and removal. Red Polycord. Corded/Cordless Pair: Corded; Shape: Flanged; Material(s): TPE; Noise Reduction Rate (NRR): 27 dB.