3 Pairs Ear Plugs for Sleeping Noise Reduction Silicone Sleep Earplugs Reusable Hearing Protection (Black, Grey and Red) 40dB Noise reduction: with 3-layer structure, the NRR can be up to 40dB, which is twice higher than ordinary earplugs; It's a great choice for studying, sleeping, working, concerts and general hearing protection in noisy environments Comfortable design and reusable: the noise reduction earplugs are made of quality silicone material that provides comfort from prolonged usage, they are suitable for all kinds of people; In addition, they can be reusable, just wash it in the warm water and then can be applied again for many times Effectively reduce noise: the noise cancelling earplugs can effectively reduce noise so as to protect your hearing under all kinds of situations, suitable for sleeping, construction, concert, shooting, motorcycling, racing, roaring machines, pets, camping in the wild, etc. Provide extra comfort: the silicone hearing protection earplugs are suitable for all kinds of skin, which will not cause discomfort, pressure, pain or irritate your skin, but provide you with comfortable wearing feeling and good using experience Note: The data are manual measurement, please allow a 1-3cm error, due to the differences between the light and the display, there will be a certain color difference, the specific received in kind prevail.