3M E-A-R Classic earplugs
3M E-A-R Classic earplugs were the first foam earplugs ever and are the most popular in the world. Today, they are still the leading seller across the world because of their outstanding advantages. Specification: - Meets ANSI S3.19-1974 Standards - NRR (max): 29 - 1 Pair Per Pillow Pack, 30 Pair Per Box