Fun: Includes 4 Beautiful Balls - Whack Them And Watch Them Go. The Tray Catches The Balls & They'Re Ready To Roll Again.;Motor Skills: Teaches Coordination And Develops Motor Skills With Each Whack. Have Some Fun And Hammer Away!;Whackiness: Includes A Mirrored Background Adds To The Action For Loads Of Whacky Fun.;Sounds: Hammer Squeaks, Wheels Spin, Balls Bang. The B. Whacky Ball Packs Tons Of Action In A Small Amount Of Space.;Packaging: Clear, Recyclable Packaging With Gift Tag Makes For The Perfect Present.;Motor Skills: Teaches Coordination And Develops Motor Skills With Each Whack. Have Some Fun And Hammer Away!Whackiness: Includes A Mirrored Background Adds To The Action For Loads Of Whacky Fun.Sounds: Hammer Squeaks, Wheels Spin, Balls Bang. The B. Whacky Ball Packs Tons Of Action In A Small Amount Of Space.;Packaging: Clear, Recyclable Packaging With Gift Tag Makes For The Perfect Present.