Sleep Mask Is Made Of 100% Top Quality Silk On BOTH Sides. The Super Soft, Super Smooth Mulberry Silk Is Light Weight, Breathable And Protein Rich, Which Gives You Total Blackout, Whether At Home, In A Hotel Or On The Plane. The Therapeutic Gel Eye Mask Is Made Of Eco-friendly, Nontoxic Condensate And Purified Water, Sealed With Cold Resistant Soft PVC With Skin Friendly Matte Finish. No Unpleasant Smell, Safe For Pregnant Women And Kids. It is Comes With A Fit glam Branded Zip Up Matte Finish PVC Bag For Easy Storing And Carrying. Just Throw It Into Your Bag And Enjoy Better Sleep And Eye Spa Anytime, Anywhere ! A Unique Gift For Anyone Wanting Deep, Uninterrupted Sleep And Beautiful Eyes! The strap of this lightweight sleep mask, is easy and fast to adjust and has a quick release closure.