Washable, reusable and detectable pre-formed earplugs made of softsynthetic material, with 3-rib design. These earplugs have a comfortablefit and offer excellent protection against universal noise. These earplugs are detectable by means of a tiny steel ball embedded in the front of the earplug. Ear protection with a sophisticated design that is primarily useful in the food industry. Packaged per 50 pairs.