Sesame Street Comfy Fur Cookie Monster Costume Includes Plush Jumpsuit and Character Headpiece with Light-Up Eyes With 3 LR44 Button Cell Batteries Who says you can't be cozy and adorable at the same time? Make your toddler's dreams come true with this Sesame Street Comfy Fur Cookie Monster Costume! The plush jumpsuit is perfect for playtime, and the character headpiece has light-up eyes, complete with 3 LR44 Button Cell Batteries!