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 including: Excellent protection with an NRR 29dB; Easy to use cylindrical shape; Soft, low pressure for all day comfort; Non-allergenic, moisture resistant and non-flammable; Yellow for high visibility. E-A-R Classic earplugs are proven performers. Their proven size has been tested to be the right size to fit the widest range of ear canals while the cylindrical shape has been shown to protect better than tapered plugs. E-A-R is the only manufacturer to make its own foam, so it can regularly test for optimum and consistent performance. No wonder they've been the most requested hearing protector in the world for over 30 years. Sold: Bulk, 200 Pairs. Features: * Most popular earplug in the world. * Laboratory tested NRR 29dB. * The E-A-R yellow color is your assurance of proven protection. * Moisture resistant dermatological safe foam is not irritating. * Slow recovery PVC foam provides comfort with low pressure. * Flame retardant - critical for storage considerations. Specification: * Meets ANSI S3.19-1974 Standards