The 3M™ E-A-R™ UltraFit™ corded earplugs features a proprietary, premolded,  triple-flange design that fits comfortably in most earcanals.  - Carrying case keeps earplugs clean and 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 3M™ E-A-Rfit™ Validation System Color Yellow Cord  Type Vinyl Dielectric Yes Hearing Protection Style Pre-molded/ reusable Material Elastomeric Polymer Mission Type Aircraft,  Ships, Vehicles Noise Reduction Rating 25 Decibel Operation Type Facility Safety,  Maintenance, Repair & Operations, Overhaul Packaging Poly bag Product Type Earplugs  Recommended Industry Military Maintenance, Repair and Operation ( MRO) Shape Multi-Flange Size One Size Fits Most