The Dooky Universal Stroller Fan keeps your baby cool and comfortable on hot days. The fan has harmless, baby-safe soft foam fins. The Fan has a flexible neck that allows you to position the fan in any direction. The spring-loaded clip houses the battery pack (2 x AA batteries required) that powers the fan. The clip can easily be attached to any stroller bar, cot rails, and playpen. (2x AA batteries not included). Features: Keeps your little one cool 100% baby safe soft foam fins Clips on any stroller bar Strong airflow 360° rotation Requires 2x AA batteries (not included).