Safety and comfortable material: the loop earplugs are made of premium soft silicone material, which is safety and no harmful to the body. And the earplugs are designed umbrella shape in line with the structure of the ears, easy to insert but do not take off, bring you comfortable feeling and will not feel pain in the ears while using it for a long time.Further use for multiple occasions: our ear plugs are softer than others, and can seal your ears much easier to make it waterproof, reduce noise. So the reusable silicone earplugs fit for children and adults, and use for swimming, shower, sleeping, study, noise reduction, snoring, planes and travel.Noise cancelling and waterproof: We have adopted a triple protection design for the earplugs for sleeping, the 3-bulb shape improves the sealing ability of the protective earplugs extremely, and uses highly waterproof soft silicone material, not only suitable for noise cancellation to protect your hearing from loud noise and noise interruption, but also fits for swimming and showering to avoid your ears falling into the water.Reusable and portable: Our waterproof noise cancell earplugs are easy to clean, washable. And the grinding earplugs have a long service life of 12 months and durable, skin-friendly as well, which is reusable, and save your money in long-term use. Volume of the earplugs for sleeping is tiny, and the box is small, you can put it in the bag to any place you want, it is very comfortable and does not occupy space.