1. [RECESS DESIGN]3D sleep eye mask features a recess design that provides ample 3D space without pressing on your eyes, providing a comfortable eye experience. Practical sleep eye mask can let you fall asleep easily and even don't feel its presence, ideal for sleep eye mask. 2. [BLACKOUT SLEEP EYE MASK]Blackout sleep eye cover is designed with ergonomic contours, combined with a three-dimensional nose design, which is comfortable to wear and can provide excellent blackout effect. You can easily have a full-black sleep environment even when the surrounding light is strong. 3. [INCLINED DESIGN]Night Sleep mask is designed with a 15° inclination to ensure a snug fit in the eye sockets and temples. The comfortable sleep mask minimizes pressure when sleeping on your side and is also suitable for those who sleep on their back. 4. [ADJUSTABLE BUCKLE]The straps of the adjustable sleep mask have an adjustable buckle to fit all head shapes. The eye mask straps are highly elastic, easy to adjust, flexible and durable, and can be worn comfortably on the head, and are not easy to slide or catch hair when changing positions during sleep.