Effective Noise Reduction: The earplugs are reusable and durable soft silicone earplugs. The sleeping earplugs have a noise reduction of 38dB, which effectively reduces harmful decibel levels in noisy areas without compromising sound quality. Find Your Fit: The noise cancelling silicone earplugs come with 3 different sizes of S/M/L to meet the needs of more people. There are single-layer and double-layer earplugs, 8 earplugs in total. Multi-use: The earplugs are versatile and provide almost invisible protection against loud noises or simply serve to suppress distractions and promote concentration when learning, reading or sleeping. Suitable for sleeping, snoring, working, shooting, air travel, loud events, concerts, etc. Kindly Note: Please make sure you wear the earplugs with the right steps. Environmentally Friendly Design: These silicone earplugs are reusable and washable, which is environmentally friendly. We recommend that you clean the earplugs and silicone earplugs regularly with clean water or a damp cloth after prolonged use. However, please note that the filter should be removed before cleaning with water.