Flange design gives the most comfortable fit of any reusable. Conforms to oval shape of ear. Washable, promotes worker hygiene. No rolling or touching plug portion during insertion. It cuts high noise, wash and reuse, hygienic. Corded/WithOut Cord : Corded Cord Material : Cloth Cord Type : Cloth Electrically Insulated : Yes Hearing Protection Style : Corded Material : Elastomeric Polymer Metal Detectable : No Moisture Resistant : Yes Noise Reduction Rating : 25 Decibel Plug Color : Yellow Plug Material : Elastomeric Polymer Recommended Industry : Automotive, Construction, General Manufacturing, Manufacturing, Metal Fabrication, Military Maintenance, Repair and Operation (MRO), Mining, Oil & Gas, Pharmaceutical, Transportation Reusable : Yes Shape : Multi-Flange Size : One Size Fits Most. It cuts high noise, wash and reuse, hygienic. Premolded, triple flange earplug s fit comfortably in a wide range of ear sizes No need to roll earplugs before fitting so the tips stay clean even if hands are dirty Soft polymer is washable and reusable, reducing both waste and costs Noise reduction rating (NRR) 25 dB. CSA Class AL