MACK’S® Dreamweaver Sleep Mask the most comfortable sleep mask on the planet! Contoured design allows complete freedom of movement to open and shut the eyes, while keeping the wearer comfortably inside a curtain of darkness. Great for air travel, daytime sleep, etc. Made of silky smooth bra-like material it is Washable/Reusable and so light and slim, you’ll hardly know you’re wearing it. Features dual elastic straps with adjustable tensioners for optimum performance and comfort the contoured design helps prevent smudging of eye make-up.