Test compatible with 3M™ E-A-Rfit™ Validation System. • UltraFit™ include stainless steel ball positioned in stem with metal detectable cord. Feature pre-molded, triple-flanged design and require no roll-down or sizing. Comfortable, effective, washable and reusable. Available with metal detectable Econopack cord. • Express™ Pod Plugs™ feature easy insertion, paddle-style grips for correct fitting and no roll-down. Packaged in pillow packs. • Push-Ins™ feature no roll-down design and flexible stem for improved hygiene. Ready-to-use, reusable plugs form an effective seal against noise. • Classic™ Plus have metal detectable cord and plug; dermatologically safe foam for comfortable seal and highest NRR available. • Yellow Neons™ include stainless steel ball encapsulated into foam of the earplug with metal detectable cord. Roll-down required.