-- 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. FULLY ADJUSTABLE -- Expand from 15.8" to 27.6" in circumference, suitable for women, men. Thin, easy-to-adjust head strap won't snag hair. The buckle stays at the back of your head, not at your temples, which can be uncomfortable for side sleepers. TOTAL BLACKOUT -- Sleeping in absolute darkness increases the production of Melatonin, and paves the way to a more restful and blissful night's sleep. Whether you're on the go, daytime napping, or at-home slumber, this eyeshade help you wake feeling refreshed and rejuvenated. SAVE ON SKINCARE -- Silk is less absorbent than cotton or synthetic, which means more beauty product stays on your skin, saving you money and giving you that bedtime glow! Unlike satin pillowcases, silk sleeping mask does not soak up as much moisture, which can help keep your skin hydrated. NATURALLY HYPOALLERGENIC -- Only organic silk touches your face and eyes. Colorfast and used non-toxic dyes, making it a best choice for anyone with sensitive eyes or skin conditions like eczema. IDEAL for DRY-EYE SUFFERERS -- Cooling fiber of silk lets healthy oxygen flow while keeping dry air and allergenic particles out, and also prevents excess heat from being trapped, like memory foam contoured facemasks, which may interrupt sleep. ANTI-AGING -- The friction free texture gently interacts with your skin, helping protect the delicate facial skin around your eyes by preventing imprints from bedding that could cause creases and wrinkles. A natural sleep aid and eye relaxer, crafted from 100% skin friendly mulberry silk. Only super-soft, super-smooth and feather light pure silk offers the breathable, cool relaxation of the soothing masks found at the world's premier spas. Achieve the ultimate beauty sleep thanks to the silk properties.