The 3M E-A-Rsoft SuperFit Uncorded Ear Plugs seal the ear canal with soft, slow-recovery foam for excellent noise reduction and reliable hearing protection. An orange fitting ring provides a guideline for proper fitting. The tapered ear plugs are easy to roll down and insert, then expand within the ear canal for a comfortable, secure fit. Recommended applications include assembly and mechanical, chipping, chiseling, cleaning, drilling, furnace operations, grinding, heavy equipment operations, machining, metal repair, painting, pouring/casting, power fastening, riveting, sanding, sawing and welding. These ear plugs are commonly used in the following industries: agriculture, automotive, chemicals, construction, general manufacturing, healthcare, oil and gas, and pharmaceuticals. These ear plugs have a Noise Reduction Rating (NRR) of 33 dB. Ear plugs are made of a polyurethane. Test compatible with 3M E-A-Rfit Validation System. Note: 3M strongly recommends fit testing of hearing protectors. Research suggests that many users will receive less noise reduction than indicated by the NRR due to variation in hearing protector fit, fitting skill, and motivation of the user. If the NRR is used, 3M recommends that it be reduced by 50% or in accordance with applicable regulations. Disclaimer: 3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e. g. , for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e. g. , U. S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and limitations. Misuse of 3M industrial and occupational products may result in injury, sickness, or death. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.For industrial/occupational use only. Not for consumer sale or use. DESIGNED FOR 3M ONE TOUCH DISPENSER: Dispenser delivers one uncorded foam ear plug with a gentle turn. VERSATILE: Use while chipping, chiseling, drilling, furnace operations, grinding, heavy equipment operations, machining, pouring/casting, power fastening, riveting, sanding, sawing and welding. ORANGE FITTING RING: Helps identify how deeply the earplug is inserted. When minimal to no orange color is visible, the proper insertion is achieved. SOFT SOUND-ABSORBING FOAM: Soft foam earplugs are easy to roll down and insert, then expand within the ear canal to help reduce noise exposure. NOISE REDUCTION RATING 33 dB. CSA Class AL. *. OUTSTANDING COMFORT: E-A-Rsoft ear plugs have an advanced foam with a smooth texture - offering in-ear comfort for wearing over an extended time.Size: One Size. Recommended Uses For Product: Noise Reduction. Material: Polyurethane. Color: Yellow/Red. Brand: 3M. Best Sellers Rank: See Top 100 in Health & Household. Country of Origin: USA. : B06WP5V879. Manufacturer: 3M. Date First Available: October 11, 2014. Department: Unisex-adult. Item model number: 391-1254. Product Dimensions: 7.3 x 8.2 x 9 inches; 8 Ounces. Is Discontinued By Manufacturer: No.