Ream Zone Sleep Mask Moon Stars Soft and Smooth. Adjustable head strap. This plush and luxurious Sleep Mask is specially designed with an extraordinarily soft combination of cotton and silk that is very easy on delicate eyes and skin. Very effective in blocking out distracting light and visual stimuli. This mask envelops the eyes in velvety darkness and comfort so that the mind is free to rest, relax, and perchance - to dream. Great for: Cat, Power naps; Power naps; Naps on planes, trains automobiles; A good, full night's rest. Not tested on animals. Environmental friendly Hand Wash in Luke Warm Water Do not use harsh soap or detergent. Hang to dry Couldn't live without my Dream Zone Sleep Mask 've tried them all, but DZSM is the BEST!!! I have multiples so one is at my bedside, one in my backpack, one in my personals bag for long trips. Deliciously soft, super durable, great price. Don't waste your money on the $.99 masks. They're great...while they last (a short time). Invest in great sleep!