Bell Shape. Offers versatility and a comfortable fit for a larger range of individual ear canals. Flange provides a more consistent fit. Extremely Soft Foam Plug. Provides a comfortable, low-pressure fit. MADE in USA (uncorded). Meets ANSI S3.19-1974 standards. NRR (Noise Reduction Rating) 33 dB 50 Individually Wrapped Pairs per Pack Tested according to ANSI specs S3.19-1974, Radians Made in the USA disposable foam earplugs feature soft, slow-recovery foam for extreme comfort and outstanding noise reduction to protect your hearing. They are easy to roll down and insert, and they expand slowly for a low-pressure fit in virtually any size ear canal. They are available in a corded and uncorded options and are conveniently packaged in individual polybags to keep each pair clean.