Noise Cancellation: Earplugs for sleeping are made of high quality silicone, which provides better noise cancellation than foam earplugs. Our silicone earplugs reduce noise by 27dB, one of the highest available and suitable for long life. Reusable and malleable: noise canceling earplugs are designed to fit the ear canal with less pressure, suitable for adults and users who are uncomfortable with or dislike earplugs. They can be arbitrarily shaped and worn for a long time, fit the ear canal, reduce foreign body sensations. These earplugs cover the ear canal tight enough that they won't fall out, even when you're a side sleeper. Sleep earplugs are non-disposable and can be reused. Comfort and Safety: Our premium quality earplugs are lightweight and comfortable to wear even for a whole day, won't cause pressure, pain, irritation or itching as they are made of soft non-toxic food grade silicone. They contain no harmful chemicals, are gentle on your skin, and the daily storage case is BPA-free, ensuring your health and well-being. Multi-function: The waterproof earplugs have good air tightness and good noise reduction performance, suitable for many occasions such as construction sites, concerts or traffic. With good water resistance, the earplugs can also be worn while swimming to protect your ears from water. Size about 15mm Due of factors such as manual measurement and display differences, there may be slight differences between individual products and images, please forgive me.