Justice League Sleep Mask -Officially licensed Justice League sleep mask -Blocks out any unwanted light -Soft, adjustable, light-blocking and washable (hand wash) -Features the Batman, Superman, Wonder Woman designs -Justice League designs for young kids and adult (ideally age 4 or above) -Not intended for children under the age of 3. -Convenient and hygienic -Specifications -Size:190 x 105 x 10 mm -Weight:19 grams -Materials: 100% cotton