Unique Push-to-Fit design provides excellent decibel-reduction performance with a clean & comfortable wearing experience. Flexible-fit stem allows the wearer to insert the plugs without touching the plug tips, keeping the tips & the user's ears clean, even when the user's fingers or gloves aren't. Soft & smooth, no-roll, slow-recovery E-A-Rform tips slide into place easily, compressing as they're inserted & slowly expanding once in place, ensuring a snug & secure fit. Compatible with the 3M E-A-Rfit Validation System. Reusable. Corded / Cordless Pair: Corded; Shape: Round Pod; Material(s): E-A-Rform Foam; Thermoplastic; Noise Reduction Rate (NRR): 28 dB.