SAFE REUSABLE: Jayine earplugs for sleep are made of silicone and ABS, non-toxic and odourless, healthy and environmentally friendly. Both the outer ring and eartips are removable, easy to clean and durable. Earplugs are great for sleeping, studying, working, commuting, travelling, cafes, etc., having silence at all times.EFFECTIVE NOISE REDUCTION: The sleeping ear plugs have a noise reduction rating (SNR) of 30dB, which effectively reduces the interference of ambient noise, enjoys your time and space. But it does not prevent you from communicating normally with the people around you. (Note: provides hearing protection, not 100% silence)STYLISH COMFORT: Black ear plugs for sleeping, all classic and versatile. Apart from hearing protection, they're a great fashion item too!EASY TO USE: Unlike normal foam earplugs, the silicone ear plugs require no squeezing and no waiting. You just need to gently insert them into your ears and then rotate to adjust them to the perfect angle, soft and skin-friendly, they stay comfortable. More widely available because they are waterproof.TAKE IT WITH YOU: These noise cancelling ear plugs come with a small and lightweight storage case that you can put in your pocket, bag, luggage, or hang on your keychain, very convenient to carry. It is also a thoughtful gift for family, loved one and friends.