E-A-R Disposable Corded Ear Plugs, Metal Detectable, Bullet Shape, NRR 32 dB, Yellow, 100 PairsMfr #: 311 4106 OUTSTANDING COMFORT: E A Rsoft ear plugs have an advanced foam with a smooth texture offering in ear comfort for wearing over an extended time. METAL DETECTABLE: Implanted stainless steel ball bearing and metal particles aid in locating lost ear plugs. NOISE REDUCTION RATING 32 dB. CSA Class AL.* SOFT SOUND ABSORBING FOAM: Soft foam earplugs are easy to roll down and insert, then expand within the ear canal to help reduce noise