Protect your hearing; choose the highest-rated earplugs available. Extra-soft, self-adjusting foam perfectly molds itself to the ear canal, ensuring maximum comfort and effectiveness. Tapered design results in less pressure and more secure seating. Paired. Corded/Cordless: Cordless; Shape: Tapered Cylindrical; Material(s): PVC Foam; Noise Reduction Rate (NRR): 33 dB.