Silk outer w/cotton inner.A natural sleep aid and eye relaxer, crafted from 100% skin friendly mulberry silk. Achieve the ultimate beauty sleep while sleeping thanks to the silk properties.ANTI-AGING -- The super smooth and soft 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.NATURALLY HYPOALLERGENIC -- Only organic mulberry 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.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.