Baby NapCap Sleep Mask & Sun Visor 100% Premium Cotton with Cotton Spandex Head Band Promotes Sleep Safely - Pediatrician Approved - Magical Sleep Mask Screens Out Light - Blocks Out Distractions Aids in calming and relaxing babies and helps them fall to sleep. Besides being a sleep mask and sun visor, NapCap worn backwards shades the neck from sun damage. NapCap when veil is adjusted like blinders, helps baby focus on task during nursing.