These earplugs are designed to reduce the strain on your ears caused by prolonged exposure to loud noises. The ear protectors feature a proprietary SNR55dB filter, designed to provide consistent sound pressure reduction. They offer a comfortable fit similar to earphones and boast a stylish design that doesn't look like typical sleep earplugs. They are designed to minimize ear fatigue and discomfort during wear, and are less likely to cause pain or get in the way when you turn over in bed. Made of soft-touch silicone, they can be adjusted to fit the shape of your ear. They provide noise reduction while maintaining a comfortable fit. Suitable for sleeping and long-term use, they are also ideal for use during telework or in environments where noise is a concern. The main unit weighs approximately 4g. A dedicated carrying case is included, and the compact design fits in the palm of your hand. With a strap, they are easy to take out and convenient to carry, such as when using public transportation. Four sizes of ear tips (XS, S, M, and L) are included, allowing you to choose the size that best fits your ear. Made of soft silicone, they are washable and reusable. While reducing ambient noise, they are designed to allow you to hear sudden sounds such as alarm clocks, warning sounds, and people calling out. *Due to the soundproofing effect, it may be difficult to hear surrounding sounds, so please refrain from using them while walking or riding a bicycle.*