Noise-cancelling earplugs are made of super soft silicone, delicate to the touch and flexible. Reusable, washable and durable, they provide a long term solution for disposable earplugs. They have a noise reduction ratio (SNR) of 25-33 dB and vary depending on the scenario. They can reduce most noises. [Earplugs for sleep soften and optimize the sound source, reduce noise and have the right combination of frequencies. These ear plugs will protect your eardrums and hearing from high-pitched noises during concerts, festivals, loud live events, decorating, sawing, or riding a motorcycle. Comfortable, ergonomic design Our lightweight and flexible noise canceling enhanced silicone earplugs are ergonomically designed around the shape of the human ear. They cover the ear without going deep into the ear canal, thus avoiding the risk of hearing loss. Comfortable and stable, they are painless to wear for long periods of time and won't fall off, even when sleeping on your side, dancing at a concert or riding a motorcycle. Versatile] The Comfortable, reusable noise canceling earplugs provide protection against loud noises and background noise in many situations. Perfect for sleeping, these versatile noise-canceling earplugs can also help you focus while studying, working or reading. They are also essential when traveling or on public transport. [Protective Earplugs] Enjoy the peace of mind that earplugs provide for sleep, while still benefiting from high quality service. (Note: earplugs for sleep block out some noise at an acceptable volume, but are not completely silent).