Developed PhD engineering from University Tokyo this sleep mask has 99.99 light-blocking rate ideal comfortable on airplanes. It features lightweight

✅【 Important Factors for Ideal Sleep 】Generally, exposure to light at night causes the brain to awaken, making it important to "avoid light." Additionally, "feeling comfortable and relaxed" is crucial for quality sleep. The Suyamee 3D Eye Mask deeply pursues excellent light-blocking properties, a comfortable fit, and a silky texture to support quality sleep! ✅【 365-Day Japanese Manufacturer Warranty 】A one-year domestic manufacturer warranty is included. In case of malfunction or initial defects, we will respond quickly with replacements. ✅【 30-Day Return Guarantee 】Returns for customer reasons, such as differences in image, are accepted within 30 days of purchase. *An order number from the time of purchase is required for warranty claims. ✅【 Developed by a Doctor of Engineering and a Brain Specialist 】Developed in collaboration by Dr. Kazuhiro Matsui, a Doctor of Engineering from the University of Tokyo (11 years of development experience), and Dr. Shugo Tagashira, an active director with 18 years of clinical experience, to assist with ideal sleep. ✅【 Domestic Certification with 99.99% Light Blocking Rate 】Certified by a domestic quality evaluation center with a light blocking rate of 99.99%, effectively blocking almost all external light. ✅【 Ultimate Fit 】Designed with a three-dimensional structure that pursues "comfort that synchronizes with the skin," closely adhering to the eyes and nose, minimizing light leakage to nearly zero. ✅【 6-Layer Micro-Mesh Material 】Utilizes a unique 6-layer micro-mesh material for the sensitive skin around the eyes, providing a melting-like texture that supports comfortable sleep. ✅【 3D Face Mapping Technology 】The three-dimensional shape, reconstructed using CG based on the unique skeletal structure of Japanese people, creates the ideal fit after hundreds of prototypes. ✅【 Thorough Pursuit of Ease of Use 】Adopts a highly elastic rubber band that can be adjusted to fit head sizes from 44 to 88 cm, making it suitable for a wide range of users, from children to adults, regardless of gender. ✅【 Washable and Reusable 】Can be washed in a washing machine using a laundry net, making maintenance easy. It can be reused, is wrinkle-resistant, and is hygienic. ✅【 High Breathability 】Suitable for all seasons! The material dries quickly and is less prone to moisture, ensuring comfort while sleeping. ✅【 Ultra-Lightweight 】Weighs only 34g, lighter than an egg! The ultra-lightweight