Foam earplugs are bullet shaped to fit most ear canals. This soft foam earplug expands to self adjust and one size fits most. Foam is closed cell to resist dirt build up. NRR 32dB rated and comes corded or noncorded. Meets ANSI S3.19-1974 and is perfect for industrial applications as well as recreational activites like concerts, target practice or DIY chores or yard work.