Dreambaby Stroller Fans feature soft, baby-safe foam fins and are ideal for keeping your little one from over-heating in the stroller or playpen on days when the mercury rises. Dreambaby Stroller Fans attach easily to most strollers or playpens and provide a gentle breeze on hot summer days. Why Buy Me? Battery operated, not included. Requires 2xAA batteries. Flexible neck can be adjusted to the right angle to ensure baby gets a breeze. Totally portable and perfect for beach, pool, picnics and parks.