Although the product itself is unused, there are initial scratches on both sides of the case (see photos 3 and 4). There is a slight catching feeling and sound when opening and closing the case. 【Powerful Noise Reduction Function】Made of soft silicone, with an SNR value of 50 dB, and built-in active noise reduction filters, it has high soundproofing performance. It blocks out most sounds, allowing you to immerse yourself in a quiet atmosphere wherever you are. It improves sleep quality, concentration, and protects your hearing. 【Flexible and Comfortable】The soundproof earplugs are made of flexible silica gel and are designed to fit the human ear canal. You won't feel any pain or discomfort even if you sleep on your side all night. They are made of flexible silicone, which is gentle on the skin and antibacterial. 【Washable and Reusable】The earplugs are not distinguished between left and right, just gently pull them out of your ears. They are made of soft, skin-friendly silicone material that is also antibacterial, and can be washed and reused, making them economical. 【Convenient and Versatile Storage】Includes an earplug storage case, replaceable ear tips (XS/S/M/L) 4 pairs (3 pairs of silica gel ear tips, 1 pair of memory foam earplugs), and an earplug storage case. Suitable for deep sleep, studying, work, concerts, various sports, public transportation, etc.