This 3-D sleeping eye mask has a light and breathable material and smooth fabric that let you release your facial stress and help get to sleep rapidly and besides the high-quality sponge is featured with deformation and no smell. Hand-wash or machine wash please do not dry it with a Dryer. Unique contoured protective curve with more contour space than another will not touch your eyelids no pressure on your eyes and you can keep your makeup and allows eye movements such as blinking and REM sleep. A silk eye mask will offer your eye the ultimate protection from direct sunlight rays to get sufficient sleep wherever you are traveling on a flight or working.