3M™ E-A-Rsoft™ FX™ corded earplugs feature a bell shape and super-soft, slow-recovery foam to effectively seal the earcanal and provide reliable hearing protection. Benefits •Poly bag keeps each pair of earplugs clean before use •Bell shape allows easy fitting and removal. •Noise Reduction Rating (NRR)*: 33 dB. CSA Class AL. •Test compatible with 3M™ E-A-Rfit™ Validation System.