RADIANS PROHIBITOR SMALL FOAM EARPLUGS 6 PR. The Radians FP75 Prohibitor Small Corded Disposable Foam Earplugs are sized to comfortably fit smaller ear canals while offering NRR 31dB protection. 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 hearing. They are easy to roll down and insert, and they expand slowly for a low-pressure fit.