Excellent Shading performance: Advanced ergonomic design is used to make your profile of eyes wider and deeper, not only bringing a larger space for your eyes but also blocking the light. You can wink freely and there is no pressure on your eyes and also no touch with your eyelids and eye makeup. Soft Material: Memory foam, also known as slow rebound foam, has the characteristics of light weight, soft texture, outstanding elasticity, no damage to your skin and difficult deformation. Light and breathable texture and smooth lining help you release facial pressure and sleep quickly. Adjustable Head Band: Unique, adjustable, pain-free head elastic band is soft and durable and encircles your head comfortably. With a wider and longer band, it is easy to be adjusted and does not entangle your hair. Moreover, it does not deform or fall off during sleep and is suitable for wearing for a long time. Repeating Tests: Through long-term studies and data, we update every detail, greatly improving shading performance and sleep comfort level and bringing you comfortable and lasting sleep. Good Helper for Sleep: Whether on beds, coaches, planes or in camps, you can take out this kind of portable and comfortable sleep mask to enjoy uninterrupted deep sleep, allay tiredness and enhance sleep quality.