The Radians Prohibitor Small Disposable Foam Earplugs are sized to comfortably fit smaller ear canals while offering NRR 31dB protection. Tested according to ANSI specs S3.19-1974, these USA-made disposable foam earplugs feature soft, slow-recovery polyurethane foam for extreme comfort and outstanding noise reduction. They are easy to roll down and insert, expanding slowly for a secure, low-pressure fit.