The 3M™ E-A-R™ UltraFit™ corded earplugs features a proprietary, premolded, triple-flange design that fits comfortably in most earcanals. Ergonomic pistol grip for an easier fit. Polymer formulation gently hugs the earcanal to provide an effective seal that protects against noise. - ergonomic pistol grip for an easier fit - triple-flange provides proven protection without rolling or touching plug during insertion. - conforms well to the ear's natural oval shape. - washable and reusable. - corded earplugs - noise reduction rating (NRR): 27 dB CSA class AL . The NRR may overestimate the hearing protection provided during typical use. 3M™ recommends reducing the NRR by 50% for estimating the amount of noise reduction provided. 3M™ is leading the advancement of hearing Conservation™.