Safeyear Anti-noise earplug is made of Polyurethane Foam and Soft Silicon, which is soft and comfortable and will slowly recover and seal the ear canal to reduce noise and protect your hearing. The tapered design makes the earplug easy to insert and fits better in the ear canal.Our earplugs are well packaged and guaranteed to be in a clean environment before use. These earplugs are typically used in the following scenarios: Construction, Road & Building Workers, Forest & Wood Workers, Mining, Mechanics, Factory Workshop, Shooting, Sleep.