Cartoon Baby Girls Boys Toddlers Cotton Sleep Cap Headwear Lovely Hat, 3-9 Months Material: 100% organic cotton & super soft Designed with safety in mind this hat is completely breathable, so that you can feel good about putting it over baby's delicate skin and eyes. Keep your baby happily asleep in the stroller, in the car, or on the plane thanks to the unique, fold down mask that blocks out light. Thanks to the unique, fold-down mask that blocks out light. Keep baby head temperature and reduce heat loss,which can prevent colds.