Radians Resistor 32NRR Earplugs Bottle of 25 Pair Radians Foam Earplugs have a tapered shape and offer the most natural fit and seal for the ear canal. Smooth shiny surface repels dirt. Low pressure, self-adjusting foam offers long-wearing comfort and quick recovery time. Comfortable, tapered shape. Smooth shiny surface repels dirt. Low pressure, self-adjusting foam offers long-wearing comfort and quick recovery time. Made in the USA. NRR 32 dB