Healthy and safe. The earplugs are made of eco-friendly polyurethane, which has been rigorously tested to be non-toxic and safe, so you can use them with confidence. Their soft texture and good sound insulation make them the best companion in your life. <br> The soft foam mute ball is easy to shape and adjust. These reusable mute earplugs can be shaped to fit any ear shape, creating a tight seal and optimum protection against noise and water. Easy to clean and washable right out of the box. <br> Noise reduction. Can be used as noise canceling sleep plugs, travel plugs, soft noise reduction plugs for work or play, and more. Used to improve sleep, concentration and hearing protection. <br> Soft and comfortable. Our noise canceling earplugs rebound slowly enough for you to adjust them and gently fill the ear canal. The earplugs are super soft, with low pressure and will not cause pain in the ear canal. <br> Home, classroom, travel by car, boat, plane, factory, construction site , etc. Earplugs help reduce noise so you can study, rest, work, travel and play with less noise and more efficiency.