1. Sleeping Eye Mask with Zero Eye Pressure:The mask is designed with 3D ergonomics and does not restrict eye movement when worn, nor does it affect REM sleep after falling asleep. The amplitude on both sides of the eye mask is very close to the position on both sides of the face, designed for side sleepers; 2. Fabric and Good Looking: The sleep eye mask use high-quality Lycra fabric,Rebound memory foam , Its comfort and breathability make it softer to the touch.This kind of fabrics of sleep mask is very suitable for many scenarios such as air travel, business trip, relaxation, Napping, meditation, yoga, dry eyes, and insomnia,etc.The choice of four colors suits the needs of most people, so this sleeping mask is suitable for women and men, as well as teenagers, and can also be an ideal gift for others 3. Blockout Lighting Perfectly: The middle of this sleep mask is made of lycra fabric and resilient memory sponge that blocks of strong light. The edges are designed with sophisticated ergonomics, especially the enhanced design on both sides of the nose to perfectly block the light from below entering the inside of the sleep mask. 4. Adjustable Strap: The fixed circumference of the classic sleep eye mask can be adjusted from 17.72" to 25.2", This is a good elastic band, the elastic length is greater than the above length.And easy-to-adjust headband will not pinch your hair.