Color:Yellow Earplugs seal the earcanal with soft, slow-recovery foam for noise reduction and reliable hearing protection. The tapered earplugs are easy to roll down and insert, then expand within the earcanal for a comfortable, secure fit. Earplugs come in a poly bag to keep them clean prior to use. Regular size Yellow Neons earplugs fit most earcanals. The large size is ideal for persons with larger earcanals. 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 earplugs are commonly used in the following industries: agriculture, automotive, chemicals, construction, general manufacturing, healthcare, oil and gas, and pharmaceuticals. These soft polyurethane foam earplugs have a Noise Reduction Rating (NRR) of 33