3M™ Tri-Flange™ corded reusable earplugs features a proven, triple-flange design and pliable, premolded material to provide clean and comfortable hearing protection. Fits flexibly in most earcanals. Benefits •Vinyl cord connects earplugs. •Triple-flanged, premolded design •Livewire stem fused with flanges looks cool, inserts easily and fits comfortably. •Noise Reduction Rating (NRR)*: 26 dB CSA Class AL