3M ear classic Plus earplugs offer excellent protection (NRR 33Db), have an easy-to-use cylinder shape, are made of soft foam and are moisture resistant. Classic Plus are longer than classic earplugs to fit deeper into the ear canal and provide a higher level of protection. These useful earplugs are also Non-Allergic, non-flammable, and their bright yellow color assures compliance. 3M ear classic Plus earplugs provide all-day comfort. 200 pairs per dispenser.