Hearing protection structure: The sleep earplugs are made of soft and comfortable, high-quality silicone. The ergonomic, curved design fits the contours of the ear canal and effectively blocks noise without putting any pressure on the ear canal. The earplugs for side sleepers do not put pressure on the ear and do not hurt when worn all night! The skin-friendly material helps prevent inflammation of the eardrum and can be reused with a simple water rinse. Noise-cancelling earbuds: The noise-cancelling earbuds have been tested for multiple hearing protection to ensure that your ears are protected from harmful noise. The circular filter inside the earplug reduces noise by 35 dB (signal-to-noise ratio), allowing you to function in noisy environments. This helps you perform better while minimising the risk of noise-induced hearing loss, tinnitus and anxiety. Hi-Fi earplugs: Hi-Fi earplugs not only block background noise at a comfortable level, but also provide clear sound. Designed for live events, they reduce noise without compromising sound quality, giving you a clearer listening experience at concerts, festivals, sporting events and other noisy crowds. Versatile: Whether it's the middle of the night, during a passionate moment at a concert, during a concentrated moment at work, or even during a busy business trip or while travelling, it can create a quiet space just for you. Package contents: 1 pair of silicone earplugs with S or M or L 3 sizes of earplug heads, suitable for all types of people, even if the ear canal is small, can be used comfortably. Equipped with a storage case to prevent the earplugs from getting lost, so you can enjoy the convenience and comfort of noise-cancelling earplugs anytime, anywhere!