POOF-SLINKY-Boom Ball Bat. Listen to the thunderous fun! The Boom Ball Bat uses patented technology so it makes a drum sound with every strike of the ball! Package contains one Boom Baseball and one Boom Bat. Bat Measures 25 inches long by 5 inches wide. Recommended for ages 6 and up. WARNING: Choking Hazard- Toy contains small parts and small balls. Not for children under 3 years. Imported.