4pcs Silk on both sides A natural sleep aid and eye relaxer, crafted from Grade 5A 100% organic mulberry silk. Only super-soft, super-smooth and skin-friendly silk offers the breathable, cool relaxation of the soothing masks found at the world's premier spas, a sleep-inducing gift for women, men, all skin types 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 IDEAL for DRY-EYE SUFFERERS -- The ophthalmologist explained people who can't close their lids fully can experience extremely dry eyes, wear a shade that is against your eyelids it holds your eyes shut, so you don't wake up with dry, itchy eyes like the synthetic ones 100% COVERAGE & BETTER FIT -- A taller/deeper nose cutout are more comfortable to all face contour w/o pressing high bridged noses GREAT ADDITION TO SLEEPING SUPPLEMENTS -- Silk fibers are less absorbent than cotton, poly satin or foam material, so they can help keep your expensive eye cream and skin moisture where they belong, which means more skincare stays on your face, saving you money and giving you that bedtime glow COLORFAST & HYPOALLERGENIC -- Odor-free, non-toxic dyes and anti-irritation; NO stains concerns on bed sheets or pillow cases CPAP compatible, easier to use with other machine mask and headgear.