Beeswift 303L Bilsom FoamplugThe Bilsom 300 Series is Europes most used polyurethane earplug, designed for workers who need maximum protection and all day comfort in loud environments. Key Features: Polyurethane Foam: Soft foam provides superior comfort and reliable performance. Smooth, Soil Resistant Skin: Prevents dirt build up and helps keep contaminants from entering the ear canal. High Protection: Delivers excellent noise blocking performance in a single use design.