Ultra-thin flanges and flexible design allows the earplug to naturally conform to the shape of the ear for a good fit in almost any size ear canal. Soft polymer material provides exceptional comfort and durability. No rolling or touching during insertion eliminates fear of contamination. Economical reuse when regularly cleaned with soap and water for months of continued protection. Corded. NRR 25dB. Tested to ANSI S3.19-1974 standard. 100 pair per box. Sold by the Box.