【Professional-Grade Soundproofing】 Sleep earplugs reduce noise by up to 32dB (compliant with JIS S 4201 standards) thanks to their special three-layer silicone structure. They block out all kinds of everyday sounds, such as those from construction sites, commuter trains, and office noise. The advanced algorithm-controlled ANC (Active Noise Canceling) function, equipped with a dual-core digital filter, improves sleep quality and concentration. By wearing them when you're concerned about surrounding sounds during sleep, work, study, or in public transportation, they block out unpleasant sounds in your ears. A "sleep guardian shield for those sensitive to sound" that contributes to hearing protection. 【Sleep-Specific Comfortable Design】 Made with reusable, lightweight, soft silicone material. The ergonomic design ensures zero pain or discomfort even after long periods of wear. The "anti-slip/anti-fall structure" that adheres closely to the ear canal ensures ultimate comfort even when sleeping on your side. The aerodynamic shape disperses ear pressure, and the synergistic effect with the ultra-flexible material maximizes soundproofing performance. 【Hygienic and Long-Lasting】 Washable antibacterial silicone (SEK antibacterial certified). Resistant to sweat and sebum, with a one-year wear guarantee. The included storage case with a strap is convenient for clean storage and portability, and you don't have to worry about losing them. Protects earplugs from dust and moisture. Deep sleep, snoring prevention. Quickly blocks out outside noise, allowing you to enjoy a quiet atmosphere without being disturbed by the outside world. Achieves disturbance blocking in various scenarios such as swimming, studying, airplanes, and concerts. 【Universal Fit】 Earplugs that instantly reduce noise in any situation and protect your hearing. Recommended for those who want to improve sleep quality, want to reduce noise and sleep soundly, want to concentrate on studying or work, want to protect their ears from noisy environments such as live performances, and those with auditory allergies or phonophobia. 85% fit rate for men, 92% for women, and 78% for children (third-party testing). Recommended for those who want to protect their ears from noisy environments such as live concerts, and those with hearing loss or phonophobia. Compatible age range: children (5 years and older), adults, and the elderly. 【Ready-to-Use Full Equipment】 Included contents: 4 pairs of ear tips (XS/S/M/L), 1 pair of earplug bodies, 1 storage case with a strap.