E-A-R UltraFit uncorded 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. Push-to-fit style allows an easy, hygienic fit. You can use these durable earplugs again and again, reducing waste. Soft polymer is washable and reusable. Single size fits comfortably in most ear canals. Noise Reduction Rating (NRR) is 25 decibels. Earplugs are test-compatible with 3M E-A-Rfit Validation System.