Sleeping 3D masks: The Professional 3D contoured cup is designed with eye contour, avoid pressure on the eyes and avoid damage to your grafted eyelashes and makeup, which makes you sleep more comfortable and relaxed, for women and men to sleep flat and also sleep sideways. There is room for the light to between and achieves a complete shading. Whether day or night, it is very useful for sleep. Comfortable and soft to the eyes.