Excellent light shielding: Thanks to excellent ergonomics, the mask has a wider and deeper contour around the eyes, which not only offers more space to protect your eyes, but also shields the light perfectly. You can blink freely without putting pressure on your eyes, without constricting your eyelids or smudging your makeup. . Adjustable headband: Unique, adjustable, pain-free headband that is soft, durable and also comfortably fits the head. The wide and long straps are easy to adjust, wont tangle in your hair. In addition, these do not deform and do not break even if worn for a long time during sleep. . Constant quality checks: After a long period of research and data collection, we have improved every detail to greatly increase the sun protection performance and sleep comfort, bringing you a comfortable and lasting sleep. . A great sleep aid: In bed, on long car rides, on a plane, camping, wherever you are, you can use this extremely light and comfortable sleep mask to enjoy undisturbed deep sleep that eliminates fatigue and improves sleep quality. .