The 3Mâ„¢ E-A-Râ„¢ UltraFitâ„¢ cloth cord earplugs features a proprietary, premolded, triple-flange design that fits comfortably in most earcanals. Poly bag keeps each pair of earplugs available or accessible for re-use. Proprietary, premolded, triple-flange earplug design inserts easily. Soft polymer is washable and reusable Noise Reduction Rating (NRR)*: 25 dB. CSA Class AL Test compatible with 3Mâ„¢ E-A-Rfitâ„¢ Validation System