The Laser Trak earplug is a single-use, detectable earplug that features self-adjusting polyurethane foam to fit virtually any wearer and contoured T-shape to deliver easy handling. Non-ferrous metal and bright orange/blue color make for easy compliance checks. Specially created for environments where contamination from foreign objects is unacceptable. Blue poly cord attached. Packaged in pairs per box. Tested to ANSI S3.19-1974.