The Sweet Dreams Sleep Mask features a revolutionary contoured style and is made of amazing lightweight materials that offers good coverage of light blockage. Sleeping Mask Main Features and Benefits Very light and breathable, hardly noticeable and great for falling asleep comfortably Flexible and robust, take it anywhere easily! No pressure on your eyes Inside and Outside of Sleeping Mask Contoured soft polyester interlock fabric will feel great on your face, making it easier to relax and drift off to sleep. Strap Details Mask fastens with an adjustable, stretchable velcro strap for the perfect fit. Care Hand wash in cool water with mild detergent Lay flat to dry Dimensions Size: 3" x 9" Weight: .9 oz