Noise Cancelling:These silicone ear plugs come with a noise reduction rating (NRR) of 27 decibels, effectively block out noise when you need a quiet occasion. Soft Moldable:Made of premium silicone material, these earplugs for sleep is soft and moldable, makes them perfectly and comfortably fixed in your ears. Easy to Use:Simply shape ear plugs for sleeping into a comfortable shape that adjusts to your ears and fix it at the opening of the external ear canal, not need push into it. Wide Application:Ear plugs for sleep can perfectly cancelling all types of noise when you are sleeping, snoring, studying, attending concerts ,or on airplanes, etc. Reusable:The noise cancelling ear plugs is washable, makes them reusable after simply cleaned with warm soapy water and dried.