Ⅰ. Revolutionary Round Shape: Sleep Earplugs are ergonomic and natural. Shaped to fit the ear canal, ensuring optimal comfort and silence at night! Available in 3 different sizes (SL). If the headphones do not pass sound well or fall out, try a larger earplug. Ⅱ. Suitable for various sleeping positions: Not easy to fall out while sleeping. Warmed to body temperature, the earplugs adapt perfectly to the shape of the ear. The noise-reducing shielding layer acts as a shield to block unnecessary sound waves. No need to insert earplugs into the ear canal, so there is no damage to the inner ear. Ⅲ. Versatile and easy to clean: Sleeping earplugs guarantee optimal comfort and, unlike inferior silicone earplugs, foam or modeling wax earplugs are washable and reusable, and can save you a lot of money because they are not disposable earplugs. Ⅳ. Reduce noise with earplugs: Sleeping earplugs are made of soft silicone, adapt well, cause low allergens and are silicone-free. Sleeping earplugs can block noise at an acceptable volume, but not completely silent. Ⅴ. These earplugs are for people who sleep little and are sensitive to noise. They can effectively isolate voices, car sounds, motorcycle sounds, construction sounds to prevent tinnitus. In most cases, they can block noise and background noise protection, which can help you focus on studying, working or reading.