about this project High Quality: These noise canceling earplugs are made of high-grade silicone material, BPA free, skin-friendly and hypoallergenic. It's soft enough to be molded, is waterproof and reduces noise by 32 decibels (dB). Maximum Comfort: Silicone earplugs can easily fit the shape of your ears, providing better comfort than custom earplugs while providing a good seal. The slight stickiness of the silicone mud ensures that the earplugs can be fixed in the ears, which is more suitable for side sleepers. Widely Used: The moldable silicone earplugs fit all sizes of ears. If the earplugs are too large, they can also be divided into two halves for children to use. It's also the perfect solution for noisy environments. These multipurpose earplugs are great for sleeping, airplanes, loud noises, musicians, and more. Reusable: Made of high-grade silicone material that is washable and reusable. Rinse and dry slightly after use, waiting for the next use. We do not recommend over washing them as this will make them lose their stickiness. It is recommended to replace every ten times or every month. EASY TO USE: The earplugs are designed to only cover the ear hole, do not push them into the ear canal. Please wear it in the correct way, otherwise it will cause uncomfortable wearing and may cause danger.