MATERIALS: Made of soft and lightweight silicone material, comes with 4 sizes of ear tips (XS/S/M/L) and fits your ears perfectly, easy to insert, providing day and night comfort, even for side sleepers. Choose the best fit according to your ear canal. NOISE CANCELING: Our earplugs can effectively reduce external noise, achieving a maximum noise reduction effect of 27dB. Multifunctional earplugs with noise reduction function can protect you from noise and background noise in various situations. MULTI-PURPOSE: Helping you focus better, sleep well, or enjoy a quiet journey. What's more, they're perfect for work, concerts, travel, school, conversations, and other noisy environments. REUSABLE: Our earplugs are reusable, washable, compact, and can be carried in your pocket to protect your hearing in daily life. Our earplugs can also be used as gifts for your family or friends. EASY TO USE: The ergonomic design makes it very simple and comfortable to use. The noise-cancelling earplugs feature a round design that fits perfectly in the ear and, when worn correctly, does not protrude from the ear.