-- About the fact that our ancestors lived in trees and darkness 200 million years ago, but we modern humans have had only 150 years or so to adapt to electric lighting. GREAT ADDITION TO SLEEPING SUPPLEMENTS -- Silk fibers are less absorbent than cotton or satin, so they can help keep your expensive eye cream and skin moisutre where they belong, which means more skincare stays on your face, saving you money and giving you that bedtime glow. GOOD for SIDE-SLEEPER -- The plastic adjuster(high tensile strength) sits at the back of your head, not rubbing against your ears; Fully adjustable, slides from 15.8" to 27.6" in circumference. COLORFAST & HYPOALLERGENIC -- Odor-free, non-toxic dyes and anti-irritation; NO stains concerns on bed sheets or pillow cases; Cooling fiber of silk lets healthy oxygen flow while keeping dry air and allergenic particles out, and also prevents excess heat from being trapped, unlike foam material, which may interrupt sleep. IDEAL for DRY-EYE SUFFERERS -- The ophthalmologist explained people who can't close their lids fully can experience extremely dry eyes, wear a mask that is against your eyelids it holds your eyes shut, so you don't wake up with dry, painful eyes. 100% COVERAGE & TOTAL BLACKOUT -- A taller nose cutout are more comfortable to all face contour, doesn't press against the bridge of your nose. Interior extra layer for completely light-blocking properties. Whether travel or home use, this eye shade help you wake feeling refreshed and rejuvenated day or night. ANTI-AGING -- Silk has been shown to reduce friction, which can reduce pressure on creased skin; Helping protect the delicate areas around your eyes by preventing marks that could cause wrinkles; Silk naturally hydrates the skin while you sleep, reducing the look of dark circles. A natural sleep aid and eye relaxer, crafted from 100% hypoallergenic mulberry silk. Only super-soft, super-smooth and ski-friendly silk offers the breathable, cool relaxation of the soothing masks found at the world's premier spas, a nice gift for women and men with sensitive eyes or skin conditions like eczema.