E-A-R UltraFit corded earplugs feature a proprietary, pre-molded, triple-flange design that fits comfortably in most ear canals. No rolling or sizing needed to get a comfortable, protective fit. You can use these durable earplugs again and again, reducing waste. Soft, elastomeric polymer is washable and reusable. Poly bag keeps each pair of earplugs available or accessible for reuse. Single size fits comfortably in most ear canals. Noise Reduction Rating (NRR) is 25 decibels CSA Class AL. Corded earplugs are test-compatible with 3M E-A-Rfit Validation System.