QUANTUM FOAM RD EARPLUG WITH DETECTABLE CORDThe Quantum Foam in ear plug is a disposable, self expanding hearing protector, available with or without a cord, made of polyurethane foam. Made from ultra soft, hypoallergenic polyurethane foam, it provides a comfortable and effective seal. Its conical design and low expansion rate ensure proper insertion into the ear canal. The "detectable" model is only available with a cord (903684). It features a metallic core in the cord and a metal insert in