by a University of Tokyo graduate in engineering and a brain Eye mask for light blocking good sleep on good light lightweight with 3D face Suyamee

Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. ✅ [Important for ideal sleep] Exposure to light at night wakes up your brain and wakes you up, so it is important to avoid exposure to light. Furthermore, ``feeling comfortable and relaxing'' is also important for high-quality sleep. Therefore, the Suyamee 3D eye mask has been designed with excellent light blocking properties, a good fit when worn, and a silky feel to the skin, helping you to get a good night's sleep! ✅ [365-day Japanese Manufacturer's Warranty] We offer a 1-year Japanese manufacturer's warranty. In the unlikely event of a breakdown or initial failure, we will promptly replace it. ✅ [30-day return guarantee] We will accept returns for customer reasons such as the wrong image for 30 days after purchase. *You will need your order number at the time of purchase to receive the warranty. ✅ [Developed by a Doctor of Engineering from the University of Tokyo and a brain specialist] Dr. Kazuhiro Matsui, a PhD in Engineering from the University of Tokyo (11 years of development experience), and Dr. Hidego Tagashira (18 years of clinical experience), the current hospital director, jointly developed an eye mask that helps you get the ideal sleep. ✅ [Domestic certified 99.99% light blocking rate] Certified by the Domestic Quality Evaluation Center to have a light blocking rate of 99.99%, almost completely blocking outside light. ✅ [Ultimate Fit] The three-dimensional design was created in pursuit of ``comfort that synchronizes with your skin'', and it fits tightly to your eyes and nose, with absolutely zero light leakage. ✅ [6-layer micromesh material] For the thin and sensitive skin around the eyes, we use a unique 6-layer micromesh material that melts on your skin and helps you sleep comfortably. ✅ [Equipped with 3D face mapping] The unique Japanese skeletal structure is reconstructed using CG, and the three-dimensional shape derived through hundreds of prototypes creates an ideal fit. ✅ [Thorough pursuit of ease of use] Adopts a highly elastic rubber band, and the size can be adjusted from 44 to 88 cm, so it can be used by a wide range of people, from children to adults, regardless of gender. ✅ [Can be washed repeatedly] You can put it in a laundry bag and wash it in the washing machine, making it easy to clean. The great thing about it is that it can be used repeatedly, doesn't wrinkle easily, and is safe from a hygiene perspective. ✅ [Highly breathable] Suitable for all seasons: spring, summer, fall, and winter! The material does not get stuffy and dries quickly, so you can use it comfortably while sleeping. ✅ [Ultra lightweight] 34g lighter than an egg! The ultra-lightweight design puts no stress on your head, and it feels so light that you forget you're even wearing it. ✅ [Useful in a variety of situations] It can be used as a product for a good night's sleep in a variety of situations, such as when sleeping, on airplanes, on long-distance buses such as night buses, while traveling on trains and Shinkansen trains, during naps, during relaxing times, on business trips, during breaks, and when traveling. ✅ [Reliable domestic brand] Planned and developed by a Japanese company and manufactured at a factory specializing in eye masks that has a track record of many transactions on a global scale. Under a strict double inspection system, we carefully deliver high-quality eye masks to each and every customer. ✅ [Specifications] Material: Lycra memory foam cotton, Weight: Approx. 34g, Size: Approx. 25x10x2cm (Included items: Eye mask, Japanese instruction manual and warranty) Jointly developed by a neurologist and a doctor of engineering! The Suyamee eye mask for sleeping combines the knowledge of modern medicine and cutting-edge engineering to achieve "ultimate light blocking and fit." It has a three-dimensional shape that achieves a light blocking rate of 99.99%, and is equipped with unique Synchro W Eye Fit technology. The high-density micromesh material has a 6-layer structure that is highly breathable and has a silky feel that helps you sleep deeply. As a sleep aid, it can be used comfortably in a variety of situations, such as on airplanes, long-distance buses, night buses, business trips, and when traveling.