Specifications: Material: silicone Size: 17mm*14mm Weight: 60g Function:protective plug Scope of use: Dustproof and noise-proof The package includes: A 3 layers gray earplugs A storage box NOISE REDUCTION - Earplugs are reusable and durable hearing protection, made from soft silicone. They reduce most noise and help you to get in your bubble. MULTI-PURPOSE - There are versatile earplugs that offer protection from loud noises and background noise in many situations. They are great for sleeping and can help you to focus or to concentrate while studying, working or reading. And of course, they are a must have while traveling or commuting. EASY TO USE - These earplugs are easy to insert and when you wear them correctly, they don't stick out of your ears. If your ears hurt, it is best to take a smaller size. If the earplugs do not reduce sound sufficiently or fall out, it is best to try on a size larger.