Fusion detectable multiple use earplugs use advanced manufacturing technology to deliver a revolutionary combination of all day comfort and easy handling. Its FlexiFirm core ensures easy insertion into the ear canal and a superior fit all day long. Fusion patented SoftFlange design adjusts perfectly to the ear canal to deliver unmatched comfort and superior attenuation. 2 sizes large and small provide optimal fit for comfort and safety, while the attached cord and metal stem ring allow earplug detection for process industries.