【99.99% Light Blocking Rate *Based on fabric-only test results】Verified by the Japan Textile Products Quality and Technology Center (QTEC) through fabric-only testing, achieving a 99.99% light blocking rate. The 3D structure ensures a comfortable light-blocking space for naps at the office or during travel, with a design that doesn't press on eyelashes, though fit may vary individually. Significantly reduces light leakage during sleep, supporting high-quality rest. 【Freely Combine for Eye Refreshment】Freely combine three temperature modes and eight vibration modes. In addition to four basic modes (Temperature/Vibration/Temperature & Vibration/Silent Sleep), you can create 24 original settings to suit your preferences. Easy operation with Japanese voice guidance and a 3D design that doesn't burden your eyelashes. 【Includes Earplugs! The Ultimate Sleep Combo Blocking Light and Sound】Comes with dedicated, detachable earplugs (can be used independently). The soft silicone material fits snugly in your ears, and when combined with the heated eye mask, it completely blocks out light and sound. 【1000mAh Large Capacity & Reusable Eye Mask】Approximately 15 uses on a single charge. An economical design that saves about 90% of costs over three years compared to disposable types. The detachable inner pad is washable. With its luxurious Lycra material and reusable, eco-friendly design, it's perfect for daily use and environmentally conscious choices.