Professional Soundproof & Noise Reduction Earplugs: Sleep Aids, for Work/Study/Music/Live Performances/Travel/Airplane Use, Noise Reduction, 32dB Reduction, Hearing Protection, Silicone, Washable, Unisex 【Professional-Grade Noise Reduction】 These sleep earplugs use a special 3-layer silicone structure to reduce noise by up to 32dB (compliant with JIS S 4201 standards). They block out all kinds of everyday sounds, such as construction sites, commuter trains, and office noise. Featuring advanced algorithm control ANC (Active Noise Canceling) with a dual-core digital filter, they improve sleep quality and concentration. Wear them when you're bothered by surrounding sounds while sleeping, working, studying, or in public places to block out unpleasant noises. A "sleep guardian shield for those sensitive to sound," contributing to hearing protection. 【Sleep-Specific Comfortable Design】 Made with reusable, lightweight, soft silicone material. Ergonomically designed for 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 noise reduction performance.